This will be a project for my Commodore Amiga 500 retro computer. I bought it around 200₺ ($30) It was rusty and wasn’t working properly. Cleaned and put a PC floppy inside. I started working but the keyboard membrane was beyond repair. So I got a small part from a friend in cgtr forum. But I didn’t like it on my desk with a PS2 keyboard. I will take the mainboard out and put it inside a PC desktop case. The smallest case that I found to fit is an HP Compaq DC5750. I got one second hand and took all guts out. Here are some pictures.
Then finally I put the mainboard inside. Used some 3D printed supports.