It's holiday season again, and for all those nerds out there, there's nothing better than hanging elements on the tree! Easy to print, and ready to hang fresh off the print bed.
Prints in one piece and is fully actuated. Try to keep the original scale, as the bearings may not print right if scaled up or down. Don't use supports. PLA is recommended, although other filaments may work.
Once you remove it off the bed, you might have to work the spinning portions for a few minutes after the print to have them spin well. Make sure to be really gentle, especially for the first few spins. Once it has spun all the way around a few times, it should be good to go. The more you spin it, the better it glides.
The author hasn't provided the model origin yet.