A smaller version of the full size vase fidget spinner. These use a MR105* or similar bearing (10mm diameter, 4mm height, 3-5mm bore). 623's* work a bit better for the outside bearings since they're heavier.
Printed in vase/spiral mode with a 0.4mm extrusion width.
The finger grips use 3mmx3mm cylinder magnets to stay in place.
Printed in Atomic Filament Translucent Aqua PLA and Filamentium Vertigo Gray* (thanks to Prusa Research for giving the Bay Area Reprap their leftover filament at the end of the Maker Faire).