Has anyone thought of a good way to make extra money with their new 3D printer? Here are some of the ideas I have come up with. What do you think? -Printing 3D printer parts and selling them online. -Rapid prototyping for other businesses. -Making moulds. -Making models for architects or anyone that need on made. -Printing custom bobble-head dolls of people using 123D. -Printing and building 3D printers for other people. Does anyone else have any good business ideas?