I had a couple marbles and wanted to design my own take at a fidget spinner. You do need a marble to use this correctly. Needs to be 24mm - 14mm in diameter. I've uploaded three different sizes. The standard size works for marbles as small as 16mm but i've added a small version specifically for those marbles. Tighter fit will lead to faster spinning. I've also added a large version for 24mm marbles. This is a simple press fit design. No glue needed, especially if you plan on removing the marble after or to switch it out.

I would print at .2 or smaller.

3 walls

20% gyroid

5 top and bottom layers

I added a printable ball too. Fits the standard version best. Print two of the halves. Glue them together. Hole in the middle is for excess glue to run into.  

Ball: 

3 walls inner/outer/inner or if you do two walls do outer/inner for best dimensional accuracy

100% infill

adaptive layer height or .1 mm layers

no support