Computer inside desk

Have any of you seen these? I would like to make one. I have my carpentry certificate, and 2 years of welding. So shouldn't be to difficult. The only thing I would have to figure out is where to get a power button like on a computer case to turn it on.

You should be able to use any kind of normally open switch tied to the two power pins on your motherboard. Any number of electronics suppliers will have them: Mouser.com or for more aesthetic from Frozencpu.com