Do you think it would be possible to miniaturise the Amiga's circuitry like that?
Also, DTV enthusiasts may want to look up the uIEC device. It is currently in development I think, and is a tiny PCB that allows you to use a Compact Flash card connected to the IEC disk drive port of the C64. Since the DTV has IEC support, in theory this should work. How cool would it be to build a DTV board and the uIEC into the casing of a PS2 keyboard? Hey presto, complete C64 in a small casing. Bye bye bulky 1541 :-D