This is a little off-topic, but I built a lovely keyboard with some extra Commodore keycaps that I had lying around. Looks really sharp, I really enjoyed putting it together.
I have several sets of 128 keys, but I cannot find a compatible mount.
I used to have two spare sets of Commodore 64 keycaps, but I tried to dye the other set and the results were... abhorrent. The pad printing on the white keycaps does not react well to dye.