Today I went to a cleanup for a local group and there were a LOT of old systems "up for grabs".
Among the things I managed to get was a CreatiVision and a Ramses, as well as a tape drive, some cartridges, the "upgraded" keyboard, several controllers and an interface expander.
No power supplies, so I'll need to see what I can work out

Now I have more targets for the controller project

John