The finished toy using a 2.5 mm crochet hook is ~ 6.3 inches / 16 cm high if you use the same weight yarn and wooden ring.

MATERIALS
-- YarnArt Jeans 55% cotton 45% acrylic 1.76oz/50g approx 174yds/160m
-- Crochet hook 2 mm or 2.5 mm US1 (UK1).
-- Rattle approx ¾“/20 mm in diameter
-- Wooden ring approx 2-3in/60-70mm in diameter
-- Safety eyes 8 mm
-- Stuffing
-- Black embroidery floss or yarn
-- Scissors
-- Tapestry needle

ABBREVIATIONS:
BOR – beginning of round;
ch – chain;
sl st – slip stitch;
st(s) – stitch(es);
sc – single crochet;
dc – double crochet;
dec – decrease (sc2tog)(I recommend to make invisible decreases);
inc – increase (2sc in one st);

Thanks for shopping and happy crocheting!