Modular Miniature storage/Transport case

I like and I've been using the original miniature storage design by VatNissen for some time now.
I made a few changes to make the design a bit more modular and useful for me.

-I made an stl with the handle removed so the boxes can be stacked
-I designed a vertical stacking attachment: this attachment allows for boxes that are stacked to be connected together.
-an horizontal stacking attachment: this attachment connects boxed that are side by side
-I added a 2cm tray to accommodate smaller miniature bases

This means I can use the securely stacked boxes as storage at home.
But I can also attach several boxes to eachother and carry them around using a single box with a handle.

I'm still looking into creating some storage for dungeon tiles/other terrain elements.
I've added al the original files into this project as well, so this is a complete pack.