What I'd like to try more is stuffing one in a multipartite Mac, such as a Quadra desktop or whatnot, in a stealth fashion. The Mac mini would fit without much or any trouble, and many of the original ports (power, Ehernet, modem, VGA) could be wired up for new use, and even the ADB and serial with adapters, though taking a cue from this portable C64 and running USB and FireWire with nonstandard connectors would work admirably as well. A Quadra 650 would be sized quite well for a Mac mini insertion -- its SCSI port, if not hooked up to an adapter to actually work for SCSI, could be adapted with a custom port replicator to get the USB and FireWire out of there. Getting drives and stuff working if you want them would take some heavy modding.