Summary

This is a soap dish for the EcoGeek / Good Store solid dish soap. I used the one they sell for a couple of months but it warped and rocks back and forth now. This design has a recess in the fins that holds the soap perfectly and prevents it from sliding around, and I added some self-adhesive rubber grip to the bottom to keep the whole dish from sliding around. Works great!

You probably want at least 4, maybe 6 or 8 top layers so that it doesn't get waterlogged, and 4 or more walls. I did 8 top layers, 6 bottom layers, and 6 walls.

If you want the OnShape file, you can find it here: https://cad.onshape.com/documents/6aa88ae2b998955265904d43/w/6005bb3a5245ae2f87942b1c/e/b9808294dd150e020962915e?renderMode=0&uiState=6952fe2641c19abd86f6ea63