I had an occupational therapist ask me to create some fidgets to help some of her students focus.  I printed some of the more common ones here (cone, gyro, etc), but I wanted to try designing one on my own.  This is what I came up with.  The OT loved it and so did her students.

It is strongly advised to use PLA, as the tolerances may be too tight for PETG, or other material that shrinks during cooling.  Alternatively, if using PETG, some users have commented that it works if printing each piece separately instead of PIP (also makes using different colours less wasteful).

Hopefully this can be used to help people focus, and to have a bit of fun at the same time.  

Designed for and printed on the A1 Mini.

UPDATE:

Triangle version also available: [https://makerworld.com/en/models/1134576-passthrough-fidget-triangle-version#profileId-1135492](https://makerworld.com/en/models/1134576-passthrough-fidget-triangle-version#profileId-1135492)