Soap dish / holder created from interference patterns formed by circular waves originating from two different points in the dish. Waves have different amplitudes, different wavelengths, and different phases.
Feel free to let me know if you want this customised in any way (e.g. size, drop features, randomisation).
Check out my Printables page for OpenSCAD source code:
https://www.printables.com/model/823947-wave-interference-tray