All knitters know how painstaking a task winding yarn is on your poor wrists. There’s also a lot dexterity you need to keep the yarn from tangling into a big mess. (This unfortunate mess has happened to me many times.) Craftster.org’s multitude of project forums saves the day with a DIY Lego Yarn Winder. Powered by two motors and an RCX unit, this automatic yarn winder is just the excuse we need to go out and buy a new box of Legos. Thanks Leah! Link