Strangest thing I ever found was a piece of firefighting equipment. It was some kind of enormous valve I guess - very heavy and probalby quite expensive. Had to weigh 20 - 25 lbs or so. Must have fallen off a firetruck, as it was just sitting in the middle of the road. I carried it while riding with one hand to a firestation about 1/2 mile away and just left it by one of their doors (volunteer station, nobody was there).