Here’s a great DIY on how to make Ping Pong Lights!  Actually, the “idea” or the “concept” is very creative. At some point last semester I realized that ping pong balls make great diffusers and look really cool when they are glowing. Next we concluded that a hundred glowing ping pong balls would look even cooler. It was at about this point I decided that my apartment was in dire need of some ping pong ball lights. via instructables