I'm getting a cocktail cabinet built and there is no room to put a trackball, even a 2¼". So to supplement the cabinet, I was thinking of buying (can't build crap) an enclosure with one or two trackballs in it. I like Rampart (2 player) as much as Missile Command and Centipede. I could just plug it in via USB when needed. I was thinking a self-enclosed box with just a USB port, unless extra power was needed.
Does anyone make such an animal on the Internet?