This seems like a somewhat related place to ask this: Does anyone know where I can get a 3" round screen?

I have a Star Wars clock from the 1970s that has a ton of empty space in the base. I want to put a small computer in it and replace the 3" clock face with a round screen, so it can show the time and maybe some fun Star Wars animations.

But I just don't know how to find a 3" round screen without buying 1000 of them from China.

How do I get just one 3" screen that I can attach to a Raspberry Pi or equivalent linux computer?