Using only a Pico RP2040 dev board it can emulate a 128k Macintosh with VGA out and USB Keyboard and mouse - quite amazing!
https://github.com/evansm7/pico-mac
https://axio.ms/projects/2024/06/16/MicroMac.html
https://github.com/evansm7/pico-mac
https://axio.ms/projects/2024/06/16/MicroMac.html