Spiral Crochet Hats
Ruth of Wooly Wormheads Ripping Yarns has her technique of creating spiral knit hats up on her blog. Each spiral takes just about 5 to 20 minutes to make and it's a great way to get rid of odd bits of yarn in your yarn stash.
Spiral Play — Wooly Wormheads Ripping Yarns (via MAKE: Blog)