This stackable model can hold lots of eggs in a standard fridge shelf. I printed four of the bigger ones and three smaller ones ant they can hold 66 eggs in three floors and still be stable in the fridge door (2x12 + 3x6 + 2x12 eggs).

The model is based on original posted at Thingiverse (see link). A slightly changed dimensions and added holes to the bottom and pins to the upper side to snap in to maintain better stability.

You can print different sizes for different number of eggs by modifying parameters in OpenScad. You can also slightly modify dimensions to fit to your fridge.

Printed with 0.4mm nozzle, at 0.2mm layer height and build plate adhesion brim 5mm. No supports needed.

Enjoy!