I really liked the EDH Window Deckbox by Liberty300, but when I printed my original out, the lid kept sliding off, as well as wishing the box would fit a commander in a top loader. I added a dimple and divot lock to the box and lid as well as increased the size of the box to accommodate a dual sleeved deck. I've added grooves to the inside for a top loader sleeve for the commander, and then put spin-down spots in the lid as well as a slot to put the commander while it's in the command zone. I've included a non-text version of the lid.

In testing, do not go below 20% infill as the bottom of the box will be too flimsy, Recommend 30%. Use supports for the window in the box as well.