Adorable Mini Watermelon Amigurumi Keychain: Easy DIY

There is something undeniably cheerful about a bright, juicy watermelon charm dangling from your keys or bag. This adorable mini watermelon amigurumi keychain is the perfect summer accessory, combining a playful aesthetic with practical utility. The finished piece is compact, sturdy, and undeniably cute, making it an ideal gift for friends or a satisfying stash-buster project for your own collection. Whether you are attaching it to a crochet project bag or a set of house keys, this two-piece fruit charm brings a pop of color and a handmade touch to your everyday carry.

Why the Finished Piece Stands Out

What makes this keychain truly special is the contrast between the two main components. The lower piece features a flat, vibrant red cut slice with embroidered seeds, offering a clean, graphic look. Above it hangs the whole watermelon, a textured sphere defined by six repeating dark-green stripes created through tapestry crochet. This design choice allows the maker to practice colorwork without the frustration of cutting yarn repeatedly. The addition of a tiny five-petal flower and an optional wired leaf adds a layer of sophistication, transforming a simple fruit shape into a detailed, display-worthy charm. The use of cotton or cotton-blend yarn ensures the stitches remain crisp, highlighting the intricate details of the seeds and stripes.

Pattern Overview

This free Mini Watermelon Keychain Crochet Pattern creates a striped whole watermelon and a round cut slice. The two pieces are joined with keychain hardware, with the whole watermelon positioned above and the red watermelon slice hanging below. The cut slice uses simple increases and decreases, making it a good starting point for crocheters who are still practicing amigurumi shaping. The whole watermelon introduces tapestry crochet, carried yarn, and frequent color changes to create six repeating dark-green stripes. The optional leaf uses taller stitches and an unusual turning and surface slip-stitch technique, adding an advanced element that can be omitted for a simpler project.

Choosing Yarn and Hook Size

Cotton or cotton-blend yarn is an excellent option for this pattern because it creates clear stitches and holds the small shapes well. Acrylic yarn can also be used. Choose a crochet hook slightly smaller than the size normally recommended on your yarn label. This helps create a firm amigurumi fabric without large spaces between the stitches. The exact yarn weight is flexible, but all colors used in the project should be approximately the same thickness.

Materials

• Red yarn for the center of the cut watermelon slice
• Pink yarn for the inner rind
• White yarn for the pale rind layer
• Light green yarn for the watermelon skin
• Dark green yarn for the stripes
• Yellow or cream yarn for the flower
• Green yarn for the optional leaf
• Black embroidery thread for the watermelon seeds
• Crochet hook suitable for your yarn
• Fiberfill stuffing
• Yarn needle
• Stitch marker
• Scissors
• Keychain clasp
• Small jump rings
• Metal eye pins or strong yarn loops, optional
• Thin craft wire for the leaf, optional
• Jewelry pliers for opening and closing jump rings, recommended

Abbreviations

This pattern is written using US crochet terminology.

• MR – magic ring
• ch – chain
• sc – single crochet
• hdc – half double crochet
• dc – double crochet
• tr – treble crochet
• inc – increase, work 2 sc in the same stitch
• dec – single crochet decrease
• tr inc – work 2 tr in the same stitch
• sl st – slip stitch
• BLO – back loop only
• FO – fasten off
• st/sts – stitch/stitches
• Rnd/Rnds – round/rounds

Crochet patterns can look complicated when you are still learning their abbreviations. Our guide explaining How to Read an Amigurumi Pattern can help you understand repeats, brackets, round totals, and common crochet terminology.

Important Pattern Notes

• Work in continuous spiral rounds unless the instructions specifically say otherwise. Do not join each round with a slip stitch.
• Place a stitch marker in the first stitch of every round. Move the marker upward as you complete each round. The number in brackets indicates the total number of stitches at the end of the round.
• Use a smaller hook or tighter tension if large spaces appear between your stitches.
• Stuff the pieces gradually rather than adding all the fiberfill at the end. Avoid overstuffing the cut slice because its red front should remain relatively flat. Keep the whole watermelon slightly oval rather than perfectly round.
• The lower red piece is called a “half watermelon” in some versions of the original design, but the crochet instructions create a round cut watermelon slice, not a semicircle.
• The flower and leaf are sewn on after the whole watermelon is completed.
• Keychain hardware should be anchored through several stitches, not through only one crochet loop.
• If you have difficulty beginning with an adjustable loop, compare the two methods in our Magic Ring vs. Chain Circle Guide.
• Use an invisible decrease whenever possible. This keeps the decrease rounds smooth and prevents visible gaps. Our Invisible Decrease Crochet Tutorial explains the technique step by step.

Mini Watermelon Keychain Crochet Pattern

Cut Watermelon Slice

Begin with red yarn. The red side forms the visible cut surface of the watermelon. The pink, white, and green rounds form the rind and stuffed back.

Rnd 1: Work 6 sc in an MR. [6]

Rnd 2: Inc ×6. [12]

Rnd 3: (Sc in next st, inc in next st) ×6. [18]

Rnd 4: (Sc in next st, inc in next st, sc in next st) ×6. [24]

Change to pink yarn during the final yarn-over of the last stitch of Round 4.

Rnd 5: (Sc in next 3 sts, inc in next st) ×6. [30]

Change to white yarn during the final yarn-over of the last stitch of Round 5.

Rnd 6: (Sc in next 2 sts, inc in next st, sc in next 2 sts) ×6. [36]

Do not fasten off yet.

Embroidering the Watermelon Seeds

Embroider the seeds before continuing with the green rounds. The red section is much easier to access before the piece is closed and stuffed. Thread a yarn needle with black embroidery thread. Make several short straight stitches over the red section. Each seed can be formed with one slightly angled stitch or two tiny stitches placed close together. Arrange the seeds irregularly rather than placing them in perfect rows. Leave a small space between the seeds and the pink edge. Secure the thread ends firmly on the wrong side of the crochet fabric. Do not pull the embroidery thread too tightly, or the red surface may pucker.

Completing the Cut Watermelon Slice

Change to light green or medium green yarn during the final yarn-over of the last stitch of Round 6.

Rnd 7: Working in the BLO, sc in each stitch around. [36]

Working in the back loops creates a visible edge around the cut face and allows the green section to bend backward more neatly.

Rnds 8–10: Sc in each stitch around. [36]

Rnd 11: (Sc in next 2 sts, dec over next 2 sts, sc in next 2 sts) ×6. [30]

Rnd 12: (Sc in next 3 sts, dec over next 2 sts) ×6. [24]

Rnd 13: (Sc in next st, dec over next 2 sts, sc in next st) ×6. [18]

Begin adding small amounts of fiberfill. Keep the red cut surface relatively flat. Place most of the stuffing behind the red face and inside the green section.

Rnd 14: (Sc in next st, dec over next 2 sts) ×6. [12]

Add the remaining stuffing. Shape the slice into a small rounded disk with a flat red front and a gently curved green back.

Rnd 15: Dec ×6. [6]

FO, leaving a yarn tail.

Thread the tail through the front loops of the remaining six stitches. Pull firmly to close the opening, secure the yarn, and weave in the end. Gently press and shape the finished piece with your fingers.

Whole Watermelon

The watermelon is divided into six repeating color sections. Each section creates one dark-green stripe. Begin with light green yarn. Add the dark green during Round 2 and carry both strands inside the piece for the remainder of the colorwork. Not sure how to change colors? Read our tutorial on Changing Colors in Amigurumi.

Rnd 1: Work 6 sc in an MR. [6]

All six stitches are light green.

Rnd 2: Inc ×6. [12]

For each increase, make the first sc light green and the second sc dark green. Finished color sequence: (1 light green, 1 dark green) ×6

Rnd 3: (Sc in next st, inc in next st) ×6. [18]

Finished color sequence: (2 light green, 1 dark green) ×6

Rnd 4: (Inc in next st, sc in next 2 sts) ×6. [24]

Finished color sequence: (3 light green, 1 dark green) ×6

Rnd 5: (Sc in next 3 sts, inc in next st) ×6. [30]

Finished color sequence: (3 light green, 2 dark green) ×6

Rnd 6: (Sc in next 2 sts, inc in next st, sc in next 2 sts) ×6. [36]

Finished color sequence: (4 light green, 2 dark green) ×6

Rnds 7–11: Sc in each stitch around. [36]

Maintain the following sequence in every round: (4 light green, 2 dark green) ×6

Check the stripe placement at the end of every round. Correcting a misplaced color immediately is easier than unraveling several completed rounds. Keep the carried strands relaxed while crocheting. Periodically stretch the fabric gently between your fingers to confirm that the inside yarn is not restricting the piece. Keep each decrease inside its color section whenever possible. When a decrease forms a completed stitch of a particular color, use that color for the final yarn-over of the decrease.

Rnd 12: (Sc in next 2 sts, dec over next 2 sts, sc in next 2 sts) ×6. [30]

Finished color sequence: (3 light green, 2 dark green) ×6

In each section, work: 2 light-green sc, 1 light-green decrease over the next 2 light-green stitches, 2 dark-green sc.

Rnd 13: (Sc in next 3 sts, dec over next 2 sts) ×6. [24]

Finished color sequence: (3 light green, 1 dark green) ×6

In each section, work: 3 light-green sc, 1 dark-green decrease over the 2 dark-green stitches. Complete the final yarn-over of the decrease with dark green.

Rnd 14: (Sc in next st, dec over next 2 sts, sc in next st) ×6. [18]

Finished color sequence: (2 light green, 1 dark green) ×6

In each section, work: 1 light-green sc, 1 light-green decrease over the next 2 light-green stitches, 1 dark-green sc.

Begin stuffing the watermelon. Add the fiberfill in small pieces, distributing it evenly around the inside. Shape the piece into a short oval watermelon rather than a firm ball.

Rnd 15: (Sc in next st, dec over next 2 sts) ×6. [12]

Finished color sequence: (1 light green, 1 dark green) ×6

In each section: Work 1 light-green sc. Decrease over the next light-green and dark-green stitches. Complete the final yarn-over of the decrease with dark green. Add the remaining stuffing. The piece should feel firm enough to maintain its shape but should not be stretched so tightly that the stuffing becomes visible.

Rnd 16: Dec ×6. [6]

You may use either green color for the final decreases because the closed opening will be covered by the flower. FO, leaving a yarn tail.

Thread the tail through the front loops of the six remaining stitches. Pull tightly to close the opening, secure the yarn, and weave in the end. Roll the watermelon gently between your palms and shape it into a neat oval.

Five-Petal Flower

Use yellow or cream yarn. Make an MR. Ch 4. Work 2 tr into the MR. Ch 4. Sl st into the MR. Repeat the petal instructions five times in total. After completing the fifth petal, pull the magic ring closed. FO, leaving a long tail for sewing. Arrange the petals evenly around the center. Sew the flower over the closed top of the whole watermelon. The petals use treble crochet stitches to create their height. Review our How to Treble Crochet Tutorial if you need help forming this taller stitch.

Petal

Ch 4. Work 2 tr into the MR. Ch 4. Sl st into the MR.

Optional Crochet Leaf

Use green yarn. The leaf is optional and slightly more advanced than the other parts of the pattern. It uses tall stitches, a special backward slip-stitch movement, and optional craft wire. The leaf can be omitted if you prefer a simpler keychain.

Leaf Row 1: Ch 16. Beginning in the second ch from the hook, work: Sc in next ch, Hdc in next ch, Dc in next 10 ch, Hdc in next ch, Sc in next ch. Work 3 sc in the final ch. Do not turn the work over. Rotate the foundation chain and continue along the unused loops on the opposite side: Sc in next ch, Hdc in next ch, Dc in next 10 ch, Hdc in next ch, Sc in final ch. You should have 31 stitches around the foundation chain. Do not turn.

Leaf Row 2: A thin piece of craft wire may be crocheted over during this row. Leave enough wire extending from both ends to trim or bend safely after the leaf is complete. Work: Hdc in next 3 sts, Dc in next 3 sts, Tr inc in each of the next 2 sts, Ch 1. Working backward toward the tall stitches you just made, insert the hook into the second stitch behind the hook and make a sl st. Work 3 additional surface sl sts down the side of the raised section until you return to the outer edge of Row 1. Continue around the leaf: Sc in next 7 sts, Make 1 picot, Sc in next 6 sts. In the next stitch, work: Sc, Tr, Ch 1, Sl st backward into the second stitch behind the hook, Tr. Continue with: Tr inc in each of the next 2 sts, Dc in next 3 sts, Hdc in next 3 sts, Sl st into the final stitch. Join near the beginning of the round. FO and weave in the yarn ends.

Picot: Ch 3. Sl st into the first chain made. This forms one small pointed bump along the edge of the leaf. When using wire, trim any excess carefully and bend the cut ends inward so they cannot poke through the crochet fabric. Shape the wired leaf gently with your fingers. Do not use craft wire when making the charm for a young child.

Keychain Assembly

Before attaching the hardware, place the pieces on a flat surface in this order: Keychain clasp, Whole striped watermelon, Cut watermelon slice. The flower should sit at the top of the whole watermelon, and the red side of the cut slice should face forward.

Attach the Flower

Position the flower over the closed opening at the top of the whole watermelon. Use the flower’s long yarn tail to sew around the center several times. Catch stitches from both the flower and the watermelon with every pass. Make sure the flower cannot rotate or pull away from the watermelon. Secure the yarn inside the piece and weave in the end.

Attach the Optional Leaf

Place the leaf beside or slightly underneath the flower. Sew the base of the leaf to the watermelon with several small stitches. Do not sew across the entire leaf because the remaining section should stay free and dimensional. If the leaf contains wire, confirm that both wire ends are completely enclosed.

Add the Top Connection

Create a secure connection at the top of the whole watermelon using one of these methods: A reinforced yarn loop, A metal eye pin, A small closed jump ring, A keychain screw eye designed for soft crafts. When using a yarn loop, pass the yarn through several crochet stitches and knot it securely inside the piece. Do not attach the keychain clasp to only one surface loop. Connect the keychain clasp to the reinforced top loop with a jump ring.

Attach the Lower Slice

Create another reinforced attachment point at the bottom of the whole watermelon. Add a small loop or jump ring to the upper green edge of the cut watermelon slice. Connect the two pieces with a jump ring so the cut slice hangs freely below the whole watermelon. The red embroidered side should face forward when the keychain is lying flat.

Final Security Check

Gently pull each connection before using the keychain. Check that: The flower is firmly sewn down. The optional leaf is secure. All jump rings are completely closed. Yarn loops pass through several stitches. The embroidery ends are secured. No wire ends are exposed. The two watermelon pieces hang in the correct direction. Use jewelry pliers to close jump rings properly. Twisting a jump ring sideways preserves its round shape better than pulling the two ends directly apart.

Frequently Asked Questions

Is this Mini Watermelon Keychain Crochet Pattern suitable for beginners?

An adventurous beginner can make the cut watermelon slice because it uses basic single crochet increases and decreases. The whole watermelon is better suited to an intermediate beginner because it requires frequent color changes and carrying two yarn colors. The optional leaf is the most advanced part and can be omitted.

Is the lower piece a half-circle watermelon?

No. Although some versions call it a half watermelon, the written rounds create a circular cut watermelon slice with a red front and rounded green back. A true half-moon watermelon would require a different construction worked in rows or by folding a crochet circle.

Can I make the watermelon without carrying yarn?

Yes. You could crochet the whole watermelon entirely in light green and embroider the dark-green stripes afterward. This alternative is easier, but the embroidered stripes will have a different appearance from the tapestry-crochet version.

Can I cut the green yarn after every stripe?

It is not recommended. Cutting after every section creates many yarn ends and can weaken the small piece. Carrying the unused green strand inside is cleaner and faster once you become comfortable with the color changes.