3D technique is well suited for small volumes, especially if everyone is doing at home. Costs are minimal, and some categories of goods can be sold well. For example, plastic toys, home decorations, small gift souvenirs, figures from computer games, all this can be easily printed on the printer.If you can try to drawings, you can still make a layout of the house, summer cottages, even a car, practically with minimal effort. For a small building, you can get a decent amount. Do and sell molds for soaping. And if you work with several customers, it is possible that something and earn. If you have experience creating products at home, share your results.