USB NeXT Keyboard with an Arduino Micro
learn.adafruit.com
learn.adafruit.com
They did a second ADB based version for the later model NeXTStations, which I found a lot better to use. It had an interesting 'command bar' feature too, with a long bar like a space bar at the bottom for typing command sequences.
Just a shame it didn't have pgup/dn, home/end keys for fast maneuvering. Otherwise, so very tempting.
They're 104 key (pg up/down, win key, etc). I had one until my cat killed it with a cup of water, I got a das keyboard afterwards.
I am considering getting one of those keyboards with the coloured Cherry key switches.