Woke up this morning to find a whole pile of wiggly things on my crafting desk. After some research, I discovered that these are a variety of Flobber worms, commonly known as Rainbow Flobber Worms. Thus far, apparently, no one has discovered where they come from, what they eat, or when they sleep. Their eyes always seem to be open. The only thing that has been discovered about them is that they love to keep your place in a book.

Altho the idea of making Rainbow Flobber Worms is my own, you'll find the pattern I used for to create them here:
http://www.knitlist.com/98gift/crochetworm.htm

I used to make these back when my now-grown children were very young. Now my grandkids play with them. I think the pattern I used back then came from a magazine called Workbasket, which is now out of print.