Haha, I've thought about stuff like this before. My thought was to use a large case and mod it so that the rear looked like a standard computer. In reality there would be an integrated KVM, hub and surge strip. Boards would need to be mATX or smaller. This is definately feasible.
Another idea I had would be to put a mITX style motherboard or perhaps a mobo from a Shuttle system into the 5¼" drive bays of a computer and put some dead components into the "normal" locations in a large case with side window. Have the computer be a dead Athlon without any heatsink or fan, maybe dangle a HSF off the motherboard headers and solder on a power lead from behind the motherboard. Solder on keyboard/mouse/monitor extension cables to the back of the motherboard so the cables can be plugged into the hidden motherboard. Then, go to a LAN party and complain about the high CPU temperatures you are experiencing. :laugh: Remember you heard it here first.