HTH - prototype interlocking

Since it's a glueless packaging, I had to find ways to interlock the sides, the bottom and the top without using any adhesives.
The bottom interlocking method is the best one I've found. It's sturdy and it'll make sure the content doesn't fall out.

As for the sides there might still be some changes, depending on the placement of the dispenser. The top will be modeled after picture: