CGTrader is a 3D model exchange platform where 3D modelers can upload and sell their creations. Most are for digital scenes, animation, and games, but some are 3D printable. The site hosts lots of competitions, and a recent one was Best 3D Printable Portfolio. Sam Abbott won his own 3D printer thanks to his designs, one of which was this:
A full twin tip skateboard deck. It was printed by 3DPRINTUK, a UK print service. Though it’s sturdy enough to ride, it may not withstand dropping onto any rails. We’ll get there.