This was a fun print to create. Although I created it for the contest it was satisfying none the less. You can use supports if you like but you don't really need them. 

I made these for my fingers, but you can change the sizes of everything in the Prusa Slicer to fit your fingers. I used "/12.7MM rubber bands to make it all work. You can find rubber bands anywhere.

Use the compression rings to lock the slotted part in place. Be careful not to make it too tight. It would also be a good idea to file or sand down the inside of the parts. Make it smooth for comfort.