Originally 3d-printy as "Itty Bitty Fidget" https://www.thingiverse.com/thing:5385644

Extended the length to use 8 10x6 magnets on the base and one in the button. The longer fidget toy allowed it to be held in a whole hand vs tiny and getting lost in my pocket. Also makes an interesting 8 point counter.

Small 10x6 neodymium (x9) Top and bottom clip into place to hold it together, but would recommend glue if you intend to keep it together indefinitely. Highly recommend gluing in the magnets as they like to jump out with so many in a row.