Fidget spinner

thingiverse

This Figdit spinner has various components which must be connected. The most impressive aspect of its design is that you can determine the number of arms it will possess. I printed it out and was pleased with the result. For instance, you can rebuild it to feature two arms. It doesn't require glue if your print settings are accurate. However, if your print settings are not accurate, you'll need to sand down the parts slightly to accommodate the bearings.