This is a quick print which doesn’t need anything else than a marble or another small ball. 
 

The files are already on the correct orientation for slicing, or alternatively just grab the ready .gcode files. 
 

Note: The handle is a tight friction fit! You should make sure that there are no print artifacts on the club before trying to attach the handle. Put it in place and then whack it against the table while holding the club. If you use some silicone lube, you won’t need that much force to install it.