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Polaroid 600 AM/FM radio. These were either powered by AA batteries or by used Polaroid cartridges after the film was used up. (by Just Plain Curt)
I have one of these that I picked up from a thrift store for a couple of bucks and it seems to only pick up signals from the crappiest radio stations. But still, it can be powered by used Polaroid 600 cartridges! How cool is that?

