Robby the Robot
Robby the Robot was originally seen in a 1956 sci-fi movie titled "Forbidden Planet." This movie starred Walter Pidgeon, Leslie Nielsen (over 20 years before "The Naked Gun" was released), and Anne Francis. So, how much do you think this trashcan with knobs and legs sold for? We bet you didn't guess $5.3 million.
Bucket of Bolts
Forbidden Planet bred an entire generation of dedicated sci-fi nerds, many of which became extremely wealthy due to the time period of their birth (baby boomers). By the way, the $5.3 million didn't just cover the replica of Robby the Robot. The strange sculpture also came with its very own customized jeep vehicle, so there's that.