I find this handle useful when painting miniatures. It doesn't get in the way of the paint brush. I use double sided carpet tape to attach the miniature to the handle.
In the slicer I made the bottom ½ of the ball 100% solid infill. This adds a lot of weight to the bottom of the handle. This makes the handle bottom heavy, and more difficult to knock over. This uses a lot of filament, and is optional.
The author hasn't provided the model origin yet.