I fired up my C64 not all that long ago. Have a few perpherials for it too: 5 1/4 floppy, tape drive that uses cassette tapes, printer, and a couple joysticks for playing games.
Until last year my dad still did work on his Macintosh SE/30 computer. 16Mhz Processor 5 megs of RAM (initially 1 but we upgraded). I think it was one of the first if not the first model of Macintosh computers that could read HD floppies.