D&D 5e Creature Card Boxes

Hey all, sorry for the late creation, and Late as in I haven't made anything in a while.
So here are my D&D 5e Creature Card Boxes. I loved the Art work on the original boxes, but I have a problem with them being so flimsy. I do like to browse my creatures from time to time and constantly transporting or opening the boxes tend to rip on accident, so here's my solution. I've added a Spacer Gap between the Walls so the cards aren't hard pressed for space incase future use of them warp the straightness. And also so I can "Rolodex" the cards so I can visually find them instead of grabbing the whole lot of them out and possibly spilling everywhere.
I don't *always* try to TPK my parties, but having the cards in hand or preset and laid out for encounters just make my life as a **DM** that much smoother when they wanna go off the designated trail, sort to speak...
I have all the Creature Cards (as in the Thumbnail) and I made air gaps in the boxes for fingers (aka the Dry erase marker). I