Summary

This top uses a bottle cap as the base. The top can spin for over 2 1/2 minutes with a good start.

Instructions

Get a screw cap bottle cap (the type you screw off, rather than the type you remove with a bottle opener), and remove the plastic lining from the underside of the bottle cap. To remove the lining, I used a sharp knife to pierce the plastic lining, and then needlenose pliers to slowly pull the lining off of the bottle cap.
Attach the bottle cap to the cavity of the printed base using glue or double-sided tape.
The handle is optional. If you choose to use it, press-fit it into the top of the top. If the handle doesn't fit properly into the top, then slightly scale handle appropriately up or down in your 3d printer software and print another one.