Fidget Spinner

You have to print out the body and the 'caps' that go into the main bearing...

The main bearing is here (it's a high end sealed skateboard bearing):

https://www.amazon.com/gp/product/B000FDRQ1S/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

And the 1/2" steel balls for the ends are here:

https://www.amazon.com/gp/product/B007B2AES8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Make sure you press the main bearing onto the body BEFORE you attach the 'caps'... I use a desk vise, but you can probably just use a hammer.. Good luck and happy spinning!