We've been emptying out our house by moving the stuff we're discarding over to the Peace Corps house at a rate of about one backpack load a day. Today I walked to the house carrying my old hiking boots (which I bought on the street for the Mt. Mulanje hike) that I was going to dump in the free box.
Instead, as soon as I passed through the market, a guy asked me if they were for sale. When I said yes, a crowd of taxi drivers gathered around me, and within two minutes I had sold them for half of what I originally paid. Sweet!