Inspired by various designs, but none could take the 6Unit height bins and still being stackable and lightweight in filament use, so here is my take.

It can be stacked both horizontal and vertically.

Note. only the same width cases, can be stacked.

Caution: since the hexagon grid can be fragile, be careful when adding the handle if it is a tight fit.

Filenaming: the '456' means 4 Unit wide, 5 Unit depth and 6 Unit high