Amiga 1000
Surely someone still has an Amiga 1000 that works? Mine, from 1985, worked as of 3 or 4 years ago when all of my old Amiga stuff went into a friend's storage. We probably *could* extract it and try it out, but...
When I tried it just before we packed it off, the internal floppy was OK, but the external one just made noises. The old NTSC display looked wonky on my LCD TV, but it was there, and the Kickstart and Extras floppies fired up.
Needless to say, the machine didn't run anywhere near continuously since I got it.