Theo Jansen is an artist who makes wild animated, wind-powered robots that seem to have a life of their own. Once you set them up on a beach and let them go, they undulate, slide, and coil across the sand like some sort of steampunk gazelle.
3D printing service Shapeways is now offering two Jansen designs for sale, including a propellor-powered motor for getting your beest to move.
You can purchased the pre-printed beests for about $100 and the propeller add-on for $40. They are about six inches long. Jansen will update the designs as he perfects his larger beests and upload them as they change.
You can pick up your own beest here but sadly I can’t find a 3D file so you can print your own at home.