These small robots are made by combining a toothbrush head and vibrating motor. By changing the position of the pipe cleaner arms, bristle bots will travel in circles, straight lines, or scoot around randomly. Once they are completed, have a bristle bot derby or obstacle course. No tools required, kits include toothbrush head, pipe cleaner arms, motor, battery, and double-sided tape. For ages 9 and up.
Video demonstration
