Absolutely anything; only material and size are your limit. As we've discussed in the buying guide section of our article, 3D printers work with a variety of materials. You can create designs from ABS, PTU, nylon and other plastics with the help of an FDM printer, while with SLA technology, you'll be limited to resin. $500 market offers you printers with small to medium building volume, which means that larger-than-life projects are not exactly their strength. But you can make separate details and put them together instead of a big monolith object. So, you can follow your imagination and creativity with almost none of the limits.