I DIY’d a wall-sized projector setup and the tube ended up in storage. I tried to find someone to give it to for a year, but by then the only question people had was “is it flat?”

This was a decade or two before the light-gun revival and CRT nostalgia kicked in. It ended up by the trash.

I was sad to see it, even then. It was the height of CRT tech. Well, I thought so until I read about this one here.