Commodore 64 on Raspberry Pi 3B
Quick look at the (non official) c64 emulator and also Amibian O.S with WHD load on the Pi3 and a CRT monitor.
The RetroArch system has a bunch of working emulators but also it's possible to try out a load more such as the c64 emulator. This is basic overview and I hope to do more on the Pi in future.