the ammo cover was for 12 gauge, I only made the lid so I only included that, I would give reference to the author for the rest of the box, but I lost the link. 

the posterboard holder are to hold a posterboard upright, and also give it a nice border.

 the table boosters are to make a table with square legs that have the dimensions 3" x 3" 

If you make the boosters please give them enough shells, and infill so that they last a while, and even then, eventually fatigue will cause damage so if it's a heavy table check up on how they are doing.

the shelf organizer was something I made to organize my bookshelf, Yes I know Its large