Simple spinner fidget that works for 608-2RS Bearings (8x22x7mm) I use these http://www.kullagergrossisten.se/product/8x22x7-gummitat-abec-3

Removing the plastic cover on the bearing and spray with som oil so that the fat oil is removed makes it spin better. This was just a first spinner that shouldn´t use more than one bearing, Heavier things in the outer parts make all these spinner spinn faster but just a nice fidget this one ;-)