Fidget spinner toy of slightly larger construction than standard at 50.3mm radius (not for smaller hands).
Has protruding flickable fins to enable finger to maximise rotation velocity. See video for demo.
Has ring notch inside bearing housing for application of glue should you wish (although the bearings fit quite neatly and probably does not really need glue).
Bearings available here (Amazon affiliated):
If you are not comfortable using the above link - just search your favourite e-commerce sites for the widely available standard '8 x 22 x 7' skateboard bearings.
Other files contain the centre bearing caps and a vertical alignment plinth for vertical centring of the bearings within their housing.
Model export DXF's available for your use.
3D Printing - Graphics - Design