My wife always had an interest in it, but never acted on it. A few months ago, she was reaquainted with an old High School friend. They went to lunch & talked about how their life has evolved on the 30+ years since school. It turns out that my wife's friend is an avid metal detectorist (???). A few months ago, the girl found a ring on the beach that was appraised at 18-20 thousand dollars! Well, they made a date to do some detecting. They started of in my front yard so my wife could learn the ropes. They found a pop rivet & some nuts & bolts. They went into the woods behind my house, the site of a former lake swim club, with concession building, rest rooms, etc. I showed them where the cellar holes are & where the buildings stood. After a few hours, they came back to the house with a gold wedding band, a bunch of old coins (wheat cents, Mercury Dimes, etc) & a big bag of trash.
All in all, my wife says she's hooked.