I just recently learned to crochet and was browsing the 'net looking for easy projects and came across this link:

http://www.crochetkitten.com/cuddlesforkitties.html

It's a great idea for leftover yarn, is easy, and would benefit all those kitties in shelters. I know there is always a plea for pet bedding at our local shelter. Might be nice projects for our own babies.