[calhoun] has been scratch building some great mac based MAME cabinets. His first one was a cocktail (pictured above) built from a Powerbook and using an I-PAC to interface with the arcade controls. The motherboard and hard drive are mounted to a fold down plexiglass tray. The speakers come from the Apple “globe” speakers. This is just the first model, he’s built several bar-top cabinets and is constantly trying to improve the design.