:^) I took a walk in a local park that's been mostly abandoned to the wild (used to be pastures and fields, a family I knew) and while wandering around lost, met someone running his detector. Beats me what he was expecting to find. I've never seen so much as a stone arrowhead, and the only precolumbian use of metal was in copper.
At one pre-Civil war site, with a very cheap detector, I found a hand made, brass, wine keg spigot.