I have assumed they are 3D printed as opposed to a "found" item. I ordered some small hands-free, LED head lamps from China with the idea of making new housings. First they took more than 45 days to arrive which was very unusual for most of the things I have ordered before from other vendors, Then when they arrived one did not work at all and for the other once it switched on, it could not be switched off. Again after hundreds of transactions with Chinese companies this was also a first. Flaky electronics did not worry me too much as I expected to have to rebuild the units anyway but the long delay and frustration really deflated my interest in the project for now.