So instead of the geo-cachers moving around to swap goodies, the goodies travel around?
I like the idea. A lot. I like how it brings a group of distant people together. It's one of the reasons I PIF a lot of stuff on BPL. It might work even better in a smaller setting (to eliminate shipping charges) - a local Sierra Club chapter, scout troop, or MeetUp group. Pull a random number from a hat and be the one to take the box home after that meeting (but no repeats within a year).
For myself, gifting something is so much gratifying than bothering to sell it and (as a child of a child of the depression,) I can't even consider throwing something useable away. I can imagine people becoming very generous and a group soon being able to outfit new members totally from the goodie bag.
Maybe this could be become a component of BPL GGG events. A Chinese auction of sorts.