While we’re busy rack-mounting Mac Minis, how about a vintage Nintendo Entertainment System (NES)? If you analyze these photos closely enough (via Make), you should be able to do what this fellow did and cram your eBayed NES into a 1U rack mount. (It ought to go really nice next to your rack-mounted synths or effects or whatever.) Then, add MIDINES, a custom cartridge for MIDI output. Viola. Hook up sound, and you’re golden. Then you can keep from killing your bandmates on tour by getting out angst playing Mario on the tour bus, to boot.
Anyone who pulls this off, I will personally give you . . . oh, I don’t know, I’ll find some kind of prize. You can have my Nintendo DS or something.
See also: NES reborn as a musical instrument