The original is such a cool little spinner, but it is difficult to get a nice clear print with all the supports required.

This remix is a complete remake of the parts, splitting the top into 3 parts that can be fitted together post print.

The ball and handle parts press into the outer ring, and hold in without glue, although gluing is probably a good idea once you're happy with fitment. I made the arms on the ball and handle just slightly longer than required, which can easily be trimmed with filament snips. Snip the same amount off of both - about 1mm and ensure they align in the middle of the ring.

I printed .2 layers with a .6 nozzle, 100% infill. 

EDIT - I've added a second handle, sized up ever so slightly. Both will fit the same ring and either can be used. The blue print shows the larger handle, which is closer to the original.