Fidget spinner with 5 straight or curved spokes and ball bearing end weights.
Print either version + 2 center holders + add 608 center bearing + add 5x 1/2" ball bearings.
Press 608 bearing into center and 2 center holders with vise under light pressure.
Snap 5x ball bearings into each end holder from the side.
Wall thickness: 0.8mm
Model position affords plenty of adhesion for PLA. Don't need overkill here, or may be difficult to remove from bed.
Designed using Tinkercad
First attempts using this modeling SW.