Coffee tables just sit there and do nothing. They just wait for the stray drink and the occasional pair of feet and that’s about it. If you want a more adventurous coffee table, you could get yourself SparkFun’s LED coffee table, which took two years to build. It kicks the legs out from beneath other cofee tables with it’s ability to play a four-way game of cooperative Pong.
It uses 64 RGB serial matrices, 4 Atari controllers, and an LPC2106 dev board to create said game of Pong. Since it’s a one of a kind piece, you can’t just pick one up at the store. But if you’ve got about 2 years and some electronics experience, you can make one too. Or just admire this one.