Update: 11/20/2023 Added 35° ramps to the coin slot to help with printing.
I'd been playing with a golf ball model because the dimple pattern made my spacial brain hurt and it seemed like a fun challenge. Then I saw the piggybank challenge and figured this would be a fun project. I haven't printed this out yet but I did slice it and noticed it will need a lot of supports on the lower 20% or so of the ball. Be sure that no supports end up inside the piggybank or those will be really difficult to remove.
The author marked this model as their own original creation.