My very first computer (not the actual one, but one I got later) from 1983.
It's a ZX81 clone with a whooping 2KB of RAM.
Once in a year or so I dig it out of the closet and power it up:
Originally, the software was loaded from a tape recorder, but nowadays I hook it up with my Galaxy S4, and feed it with digitized wav-files of the original tapes. The monochromatic graphics are then displayed in all its glory on my 46" Sony LCD TV. That is +30 years of tech working together


In the same closet, I also got my second and third computer; a C64, and an Amiga500, also both fully functional.
Oh, the nostalgia...