This is a crochet worm on a string, worked in the round. Gauge is not important, but the stitches need to be tight enough that there are no large holes for stuffing to show through.

Materials:
About 100 yards of any colored worsted weight yarn (for the body)
Less than 5 yards of any black worsted weight yarn (for the eyes)
Less than 5 yards of any white worsted weight yarn (for the eyes)
3.5 mm crochet hook
Tapestry needle
Stuffing