Got it. I'm thinking at LEAST one puzzle for each item in each temp. Probably quite more.
EDIT: Wait, I just thought of something. You said I only need three maps, which means I don't think I know how we're doing this. I thought that when the switch thing is activated, it warps you to an identical map of the other temperature. Am I wrong?
RE-EDIT: Oh, wait, I think I got it. That's why it's only 8x8, so they lie side by side.