The yahoo group crochet in common will be doing a mystery square lapghan, three clues a week. Some clues are 12 inch squares, some are 6 inch. Saturday night, tonight, is the deadline to join. Looks like fun. I think you are on your own about colors etc. so might be great way to use up some stash yarn.
Here is the link if you want to sign up for the group in general, and then sign up for the mystery lapghan.http://groups.yahoo.com/group/crochet_in_common/