Simple sponge holder, can be used for storage with snap fit for the sponge or upside down for drying out.

Design can be modified in Customizer to fit your sponge dimensions and to specify wall thickness as well as the number of grid at the bottom.

This is part of my customizable/OpenSCAD models available on Github.

This is part of the Kitchen ones: https://github.com/ronoaldo/things/tree/main/kitchen