I laid my finished bag near the door and there's still more room for several items. People preparing for a trip that would span several days or simply preparing for a bug-out bag would fill their bags to the brim without considering the fact that they may find something valuable along the way. If you're at max capacity, it would be a shame to leave something you found behind or it would be a tad difficult to carry it along.
"If I could simply have access to supply lockers from an outpost… heh. All of my problems regarding storage would be solved." I'm chuckling at myself.
Regarding the items I would be bringing for trade, I brought over a few guns that are a little worse for wear. Most of them are what we found from our runs where the quality isn't that good but a gun is still a gun.
It is worth a whole fucking lot for someone who doesn't have one.