Two .stl files will let you print two different types of room dice with your 3d printer. One is corridors and one is rooms. They print nicely at one inch side. When you create a room, you just roll the appropriate die. You can print a lot of dice and use them to compose your map on the tabletop, or just print a few and draw them from an opaque bag and roll them every time you need to generate a room... [click here for more]