I would like to make case to go under my desk that would be at an angle so I could use it as a foot rest. The foot area would be knobby and with vent holes. On the other side of the holes would be fans blowing warm air at might feet, also the fans would cause slight vibrations massaging my feet.
I figure I can get a cdrom and possibly a floppy drive on USB so that can be on the desk. Also route a power switch and a USB hub to the desk.
My computer would be out of the way. My feet would be warm. And I would be very relaxed.
That is my dream case mod.