Idea:
Have a "key" rather than a spring-loaded lock that holds the lid shut.

Shortcoming:
Initial concept had the key go clean through the lid into a recess on the other side, this was too tight for my printer to handle tolerance wise, so it was changed to about 1/3 the way instead.

Issue:
Due to the nature of my box design and the pins implementation the box walls that run the sides of the lid are rather fragile and shear easily, when this inevitably happens the box might as well be lockless.

Ways to fix:
2 keys on opposite sides of the box would reduce the wear, but box is still brittle if hit or dropped on front

"Beefing" up the front of the box

Making the key insert from the bottom of the case rather than the side, since the bottom is a solid square and has fewer size constraints.
