This is my personal approach on a wall mounted drawer storage. I used Hexagons (think i do not need to explain why) and build it so it can be extended while mounted and not all Compartments need screws.

The connectors can be insertet when mounted and the Compartments can be pressed on. It should be somewhat tight fittet, so it doesn´t need all the mounting screws.

I made some premade stl´s for screws, nuts and nozzles. Feel free to send me ideas for other thins as well.

I do use Multiboard and i am thinking to make some connectors for this case as well, but at the moment i do use them directly at the wall.

The Hull ist printed Upright, the Drawer ist printed horizontaly, the connectort is printed with the writing up. It should print without problems on most printers. If tollerances for the drawer are to tight, feel free to leave a comment, so i can do adjustments.

After Printing they can be fittet together at angle and it will hold in no problem, but can be removed easily for picking up.