If you are like me, you hate to sweep and are too poor to buy a "Roomba". This BristleBot project by 11th grade programming wiz, Erin Kennedy, is a pretty simple way of getting some basic cleaning done and watching the bot scuttle around on the kitchen floor is pretty fun too.
Bristlebot @ RobotGrrl
http://blog.makezine.com/archive/2008/03/build_a_bristlebot_to_cle.html