So I have a Five Below store (
http://www.fivebelow.com) in my neighborhood, and they are offering Backpacks for $5 a pop. They aren't sports grade or anything special, but they can fit in a flat rate envelope, they sell in bulk, and have other stuffs, everything under $5.
So, for a Backpack, one Bitcoin will cover cost and shipping, and PM with address and proof of purchase to get it within a couple of days stateside, an extra
BTC for international, and one more for Express Mail domestically. If you want to send me a list of other stuff to pickup, I'll see what I can do, but no promises.
