Reflexpixel/Getty Images Sick of printing out tugboats and articulated dragons? Chances are that people usually buy a 3D printer for constructive purposes that are useful around the home, but that can get boring. How about finding free 3D printing projects and models that are weird but also useful? Don't fall into the hobbyist trap of buying new gear just to let it collect dust; it's time to stop treating your 3D printer like a toy and start using it as a personal factory for items that actually improve your daily life. These projects will look strange on a build plate, but they'll earn their keep as weird yet useful household gadgets your family can't live without. When shifting your mindset to functional 3D printing, that dull workspace clutter turns into a custom engineering hub. Anything from making a tool to help pour medicinal drinks to an odd way to hang up coats in the hallway has been thought of by the maker community already (probably).…