Fidget Spinner

Uses 608 ball bearings (8mm x 22mm x 7mm). It is really fun and addicting. You can use it in school or work because its silent. It has a really pleasurable to spin. It is very well balanced and can be balanced on the tip of your finger easily.
The Boutons stay in best when hot glued so I made one that doesn't have the insert so it uses less filament.
You can my dual spinner here, it fits in your pocket better: http://www.thingiverse.com/thing:2117339.
This is based on http://www.thingiverse.com/thing:1827241. I had to redesigned it from the ground up because even though the ridges look awesome, after a day of using it my finger became really red and irritated. By removing the ridges it still looks cool and feels good too.
Print Settings
Printer Brand:
Robo 3D

Printer:
R1 ABS + PLA Model

Rafts:
Doesn't Matter

Supports:
Yes

Resolution:
0.1mm

Infill:
20%

Notes:
Supports are only needed for the Boutons.
Post-Printing
Insert the Ball Bearings
I used a hammer to get them in. I would suggest finding which ball bearing has the best spin before inserting it because it might prove a little challenging to get out later. Here's a link to a good Thing that makes it pretty to remove if you do need to: http://www.thingiverse.com/thing:1841945
How I Designed This