Modifiable Deckbox

I felt like designing a deckbox with sides that can be swapped out for customization purposes. You can put in side panels with different decorations and colors to show what's in the box at a glance, or print panels with you name on them for public events. The back and side panels are meant to have designs and stencils extruded into them. The end of the panels with the protrusions are the bottoms. The panels are 1.8mm thick. I would recommend engraving designs 1mm deep, or 0.8mm from the floor, but do whatever works for you.
I imagine others have already made similar designs, and probably better. But oh well.

I am happy with the design, but if you want to change it up, there is room for improvement:
-The magnet-free lid could have some more cutouts so you can see more of the decorations on the panels.
-Maybe the magnet-free lid could be made taller with decorations on the outside. I made he lid taller for added grip strength, but it's still not enough to support a full b