Now you get a piece of “Back to the Future” with one of the original Mattel Hoverboards used in the film. It is in used but good condition and made of hand painted wood and metal with textured styling. It features a rear ball bearing-mounted footpad that rotates 360º and the bottom “magnet plates.” Available on eBay until August 1, you have to be a super Marty McFly fan as they are expecting bids between $30,000 and $50,000.