And it's true that many people who own 3D printers use them to make fun and unique projects, and why not? For many, it's a hobby, but you can also use a 3D printer to make useful objects that may save you a few bucks. Material cost for 3D printers is typically low, and while the price of individual items may not amount to much, taken together, you can definitely save money, especially if you've already invested in a 3D printer. The complexity of what you can print depends on the type and quality of the 3D printer you have. For that reason, we've selected relatively simple printing projects that should still save you money in the long run.