I've been writing down some of the refrigeration devices we have been discussing here, and also a few I've been looking into...
BTW, the third up from the bottom (Frostman), the one I am presently using, is the one found in a thrift shop for $20 . I put a kill-a-watt on it for a day and did the calcs for what it would be for a year ($11.78/year).
It has external coils on the back.
-AC