I was over at a buddy's house the other day, and he asked me if I wanted an air drier. Nothing special. Just a 3 foot long dessicant filled pipe style with a drain at the bottom. When I asked him what he wanted for it he put it in my car. Said he got two of them for next to nothing a while back, and he only needed one.
Ok... really small. And... yeah he is a buddy. Somebody I often as not give small things to when he needs them, but still. It was nice.