A box with exactly the right size (for me) to fix to the honeycomb storage wall with two empty-insets (not included, press in firmly, see picture).
Supports for the hexagons in the back are needed (placement at the bottom would impact stability and look). See 3mf-file.
I recommend printing with variable layer height (0.15 to .3) to get the round bottom edges smooth and save some time. See 3mf-file.
The author remixed this model.
To fix to the HSW with two “empty-insets”.