We're going to be real: Moon Shoes were just plain weird. Advertised to kids as "mini trampolines for your feet" we can definitely understand the appeal. In all of the promotional material, Moon Shoes looked like the best things ever invented. In reality, they were bulky and awkward to use. They were probably very lucky online reviews didn't exist back in the day!
Moon Shoes hit the market in the 1950s and were made of metal, but they didn't really become super popular until the '80s and '90s. We're still yet to find a child who loves them, but for some reason people still buy original pairs of Moon Shoes. You could rake in $150 to $200 if you have a pair to sell. Of course, most of us ended up breaking ours way back in the day because they didn't really work!