fidget spinner circular

simple 2 piece construction snaps together and you can even use a soldering iron on the vertical pins to weld the parts together.

uses standard 1/2" balls like these:
https://www.amazon.com/gp/product/B002BBM5SG/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

and 22mm bearings like these:
https://www.amazon.com/gp/product/B01C9XDPVQ/ref=oh_aui_search_detailpage?ie=UTF8&psc=1