I liked the Itty Bitty Fidget but wanted to use a different size of magnet 10x3mm (3d-printy's thing now includes this size). I also wanted something that had a lower profile and wanted to play with some shapes. This design uses only two printed components and a few magnets per design.

Orient the magnets to all face the same way and press them into the openings. It gives a nice 'click' when you slide the button around.

10x3mm magnets: https://www.amazon.com/gp/product/B07842PSJD/