It's happened to all of us: You open a new box of cereal or crackers, dispense as much of the product as you need, and then prepare to close the box using the package's tab-in-slot mechanism. This ...
Print them at 50% scale for a far cuter (and much less useful) result. [Jacob Stanton]’s design for 3D-printable, stacking and locking boxes is a great example of design for manufacturability (DFM).