I did have a box I made for my backpacks that I had in my truck to keep them secure, but I abandoned it. I now have a cargo bar across my bed, and I keep three backpacks lined up and strapped to the load bar. I also have two more that are on the front of my trailer (gasp!) on Trimmer Trap carriers. The three in the truck are the frequently used ones (three-way, revolver/sedgehammer, and flavor of the month) and the two on the trailer are the less used ones (gly, and MSMA/Revolver for Dallis). I drop the tailgate and it's a little backpack station. Pretty handy.