Bikes spare parts with 3D printing ?

You know what would be useful. Tools...Even if they break after one use, a lot of times you only need to use a tool once in a blue moon so if you could save yourself some dough printing it I bet people would go for that. Things like cassette and bottom bracket tools, headset presses might work or even just bits to fit on a threaded rod...maybe even cone spanners, stuff that doesn't necessarily have to have loads of force put through it or can be overbuilt. And then the small plastic stuff like tyre levers, bottle mounts and gadgets, garmin mounts, phone mounts