I've got two of these things, Sega rental sets:
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Really it's just a version 1 Sega Genesis in a rental case.
They were rentals at a local grocery store, you'd rent the whole Sega and a few games and the console would come in this nice sturdy plastic padded case with a 3-button controller and a janky RF cable. Found mine at a resale shop, the owner said he saved them from a dumpster and wanted $4 each for them.
Mine look just like that, except with the store's name and phone number written on the side with white paint marker. Maybe not the rarest or most valuable thing, but lots of people don't remember being able to rent a console.