This headband is worked from a single stitch, knit over and over until you reach the length you need to comfortably fit your head. You can even knit it with your fingers if you want and will have a fun headband or necklace in minutes.

This pattern was on About.com (which no longer exists) and has been deleted from their site, but for now it can still be found on the Internet Archive. They redirect and delete pages a lot so you may want to download/print to save.