I have a full ATX PC case for free. I have the front door although I removed the hinge assembly (and can’t find it), if you’re handy you could machine/print a new one though.
https://www.rocketfishproducts.com/pdp/RF-FULLTWR/8428604
I won’t be leaving this in the Up For Grabs section at ASMBLY unless someone plans to take it and wants me to leave it there for pickup- it’s pretty big and I don’t want an empty chunk of metal taking up space indefinitely.