Crochet Mermaid Rattle Ball Free Pattern

Introduction

This little mermaid rattle ball is a sweet, sensory-friendly project for the smallest babies in your life (0–6 months). Worked in soft pastel bamboo cotton, the ball has a plain single crochet top and bottom with a textured star stitch band around the middle, so it feels interesting in tiny hands. A flat blue tail on one side and a round blue shell on the other turn a simple sphere into a friendly mermaid. With a rattle tucked inside, it jingles gently and makes a lovely, handmade baby gift.

Materials Needed

• Yarn: Bamboo cotton, fingering weight (50 g / 120 yd per ball)
  • Color A — cotton candy pink: about 30 yd
  • Color B — baby blue: about 20 yd
• Hook: 3.0 mm (US D/3)
• Notions: stitch marker, yarn needle, scissors, small plastic rattle insert (or a clean plastic capsule with a few beads sealed inside), polyester fiberfill
• Finished size: approximately 3 inches (7.5 cm) in diameter

Abbreviations

• MR — magic ring: an adjustable loop you work the first stitches into
• ch — chain
• sc — single crochet
• inc — increase: work 2 single crochet into the same stitch
• dec — decrease: single crochet 2 stitches together into one
• sc2tog — single crochet 2 stitches together (a decrease)
• sc3tog — single crochet 3 stitches together (a double decrease)
• sts — stitches
• FO — fasten off

Gauge

24 stitches and 24 rows = 4 inches (10 cm) in star stitch pattern. Work a small swatch in star stitch and measure the middle of it; if you have more stitches than 24, go up a hook size, and if you have fewer, go down.

Tips Before You Start

• Use a stitch marker at the start of each round — the ball is worked in continuous rounds, so the beginning shifts as you go.
• Stuff the ball lightly and add the rattle before the opening gets too small; overstuffing makes the star stitch band bulge.
• Keep your tension even on the star stitch rounds so the textured band stays the same width as the plain sections.
• Make sure the rattle insert is fully enclosed and securely sealed before you close the ball, and check all sewn pieces are firmly attached.

Step-by-Step Instructions

Ball (Color A)

Work in continuous rounds; do not join or turn unless told.

Rnd 1: MR, 6 sc into the ring (6 sts).

Rnd 2: inc x6 (12 sts).

Rnd 3: [sc, inc] x6 (18 sts).

Rnd 4: [2 sc, inc] x6 (24 sts).

Rnd 5: [3 sc, inc] x6 (30 sts).

Rnd 6: [4 sc, inc] x6 (36 sts).

Rnd 7: [5 sc, inc] x6 (42 sts).

Rnds 8–14: Work in star stitch pattern around (42 sts).

Rnd 15: [5 sc, dec] x6 (36 sts).

Rnd 16: [4 sc, dec] x6 (30 sts).

Rnd 17: [3 sc, dec] x6 (24 sts).

Rnd 18: [2 sc, dec] x6 (18 sts).

Rnd 19: [sc, dec] x6 (12 sts).

Rnd 20: dec x6 (6 sts). FO, leaving a long tail. Weave the tail through the last 6 stitches and pull closed.

Note: Insert the rattle and stuffing after Rnd 14, before the opening closes.

Tail (Color B)

Worked flat in rows.

Row 1: Ch 10, sc in 2nd ch from hook, sc across (9 sts).

Row 2: Ch 1, turn, sc2tog, sc5, sc2tog (7 sts).

Row 3: Ch 1, turn, sc2tog, sc3, sc2tog (5 sts).

Row 4: Ch 1, turn, sc2tog, sc1, sc2tog (3 sts).

Row 5: Ch 1, turn, sc3tog (1 st). FO.

Shell (Color B)

Work in continuous rounds.

Rnd 1: MR, 6 sc into the ring (6 sts).

Rnd 2: inc x6 (12 sts).

Rnd 3: [sc, inc] x6 (18 sts). FO.

Edging (Color B)

With B, work 1 round of sc evenly around the outer edge of the tail and around the outer edge of the shell. FO.

Assembly and Finishing

Sew the tail to the ball at Rnds 8–10, on the star stitch band, using the yarn tail and a yarn needle. Sew the shell to the ball opposite the tail, also on the middle band. Weave in all ends securely on the inside of the ball. Lightly steam-block the tail and shell so they lie flat, and shape the ball gently with your hands; do not soak the ball once the rattle is inside.

Pro Tips and Variations

• Swap the pastel pink and blue for any two baby-safe colors, or make the tail and shell a contrasting shade for a bolder look.
• Add a small embroidered face or a few surface slip stitches on the shell for extra detail.
• Make a set in different color pairs as a matching gift, keeping the same hook and gauge so the balls stay the same size.