Rotating Rings Toy

Nice little toy made of independently moving rings. Rings are curved inside and out and just stay together. Prints in one piece. 
No assembly, no hinges, no sweat. 
Feel free to use, change, remix, update, etc. 
Tinkercad version: https://tinkercad.com/things/hSaIKjNO51b-rotating-rings-toy-flat