A spinner that uses three golf balls. Fits a standard 608 bearing.
Printer:
CR-10
Rafts:
Doesn't Matter
Supports:
No
Resolution:
0.2mm
Infill:
50%
Notes:
Use something like PETG for the body that allows some little flexibility for inserting the balls. You can balance it on the hemispherical cap or flip it over and use the flat cap.