Scotland’s LayerTrove, founded in 2013, offers a treasure trove indeed when it comes to 3D models. With over 5,000 makers downloading from their site so far, their goal is to offer high-quality 3D models ready for the 3D printer. You don’t have to do any of the design work, and you can look forward to clean printing without having to worry about fooling with supports and the resulting mess. Categories range from the Simpsons to Space Exploration, and models are very affordable to download. Read more at