Recessed Stacking Lid for 4x3 Gridfinity Boxes

I love gridfinity, but didn't want to store my bolt / nut / washer sets in open containers - I'd surely end up dropping containers and them going everywhere. And I was over using the boxes they came in. I also have more vertical space than horizontal, so I wanted to stack them, and in a way that wasn't too risky.I also wanted them sorted and labeled, and thought it would be beneficial to see the labels through the lid, and I also wanted the lid flush against the compartments to limit the risk of cross contamination if I shook, tilted, dropped, etc. So I modeled a lid using transparent PETG. I also wanted it to stack, so I recessed gridfinity base negative into it. The result is the clear stacking boxes as shown. You can print in whatever you want, PLA, whatever, but PETG transparent is chef's kiss. The lid snaps in just right. I used the fusion plugin to make the boxes, and have included a 12 compartment and 15 compartment for your use (printed in PETG, but feel free to