Green Lantern Fidget Spinner - Wingnut2k
Per a request, here's a Green Lantern fidget spinner that I came up with. This spinner uses (4) 5/16" Nuts and (1) 608 bearing. This spinner is very small, just barely only about 3-1/8" in diameter overall.
Edit: I uploaded a V2 that can use up to (8) 5/16" nuts.