Here’s a couple of videos of Rube Goldberg machines that [Austin] built. The one above was completed in 2008 as a commercial contest entry for something-or-other. After the break you can see his build from 2007 which was just for fun. Both are quite nice additions to our collection of the complicated devices. We especially like the use of a sub-woofer to move a ping-pong ball and a vibrating cell phone for some wireless integration.