Magnetic geared fidget spinner
A 2 prop magnetically geared fidget spinner. 3 spinning axis design, all 3 ball bearing will spin at the same time by means of contactless magnetic coupled gearing. Don't expect this spinner to spin for long ;D
stuff you need - bearings and magnets
1 pc 18307 ball bearing - dimensions 18x30x7mm
2 pc 608 bearing - dimensions 8x22x7mm
22 pc neodymium magnet ø 6x3mm