Tray that can be printed and linked together. This is prototype 1 and I will upload a revised version that can be linked tighter. Long story short - you can hold eggs in a line when your carton is mostly empty or make big hexagons for display

I rebuilt the idea to use less filament, take less space and be fully interconnectable in every direction (including filling in the gaps) here: https://www.thingiverse.com/thing:2877137