You can make one of these BristleBot-like (ie. Hexbug-like) "steerable vibrobots" for around $10 if you're willing to forgo the professional design. Here's an

You can make one of these BristleBot-like (ie. Hexbug-like) "steerable vibrobots" for around $10 if you're willing to forgo the professional design. Here's an article that discusses one approach: http://www.hizook.com/blog/2011/09/08/infrared-remote-controlled-rc-steerable-vibrobot-created-naghi-sotoudeh http://www.hizook.com/blog/2011/09/08/infrared-remote-contro...