It is a functional design... few holes so as not to deform the soap... the soap is always separated from the water and the contact surface with the soap is maximum so that it does not deform or stick. The piece in contact with the soap is rounded so that it does not deform. Simple is almost always what works best
I include 3 models. The Up stl is for the 3. The Down has 3 different models. Its height varies. print the one you like
The author hasn't provided the model origin yet.