I was thinking more along the line of using a tiny window air conditioner
or a refrigeration system from an old refrigerator. I suspect that with the
latter, frost buildup would be a problem.
Maybe I just need to find and buy a walk-in box. But all I have seen are
far larger than I want.
Seems like this would be a business opportunity for some country guy.
Maybe I could just build the box and have a refrigeration guy do his thing.