This is my Fidget QuadSpinner design
I provide it with a Thingiverse logo on the cap
4 spheres of 6mm diameter are used for the external masses

bill of materials:
-1 3D printed TriSpinner
-1 3D printed top cap
-1 3D printed bottom cap
-1 608zz bearing
-4 diameter 6mm spheres

Designed using Onshape
model available for free at :https://cad.onshape.com/documents/58a09a0b4cd9630fcbd8085d/w/339c32b3f835cdc68f03f812/e/1f95e33b1b31fc2b342dc589