This isn't exactly what you're asking for but
Well that's a lot of burned coin then.
Looks like AI solved the hand problem.
You don't need copper tubing, any tubing that'll hold water will work. There aren't going to be high temperatures or pressures. The supply won't be able to go full blast with poly and hose clamps but it wouldn't need to. I had a whole plan for this in my head then moved somewhere I didn't need it and never made it happen.
As for a mini spit, that's the easiest option if the central is shot, if the layout isn't complicated. But the place isn't owned by OP so it's probably a non starter. They don't even want to fix what's there it sounds like.
I can't find that one image of the dumbass who carved "JESUS" in to his forearm, so pretend I did and you're looking at it.
I wouldn't believe he'd have stopped there.
Get an actual radiator instead of making coils and attach a box fan to it. It's something I was always going to do but never got around to.
Also give consideration to saving at least some of the water to use as "gray water". If you're not familiar with that, it means water you can use for many things but not for eating or drinking.
This is the sentence in the entire large article that person seems to be laser focused on:
It later has interview excerpts with one girl who sold her own material across two accounts. It's a small part of the entire article though.