Water Hover Board ($5,290)
For the wannabe Marty McFlys out there, your childhood dreams of a levitating board have come true with the Water Hover Board from Aquatic Aviation — on the water, at least. Riders strap their feet onto the 34-inch-long board, and are boosted into the air by the force of a jet of water coming out from the other side of the water board. With this device, you can be launched high into the air and do cool in-the-air tricks while your feet are strapped onto the board. It will set you back a pretty penny … but could also make for a pretty cool entrance to your next barbecue.