It's easy to lose a dime. Have you ever been dropped? Maybe they don’t even miss you. Maybe you’re a coin somebody dropped. Somebody estimated that here are 300 billion coins lying around on American beaches and streams and gutters or under your furniture at home or beneath vending machines.[1] I’ll do the math for you again. Even if every one of those missing coins was a penny, there is a fortune worth three billion dollars lying around somewhere—unmissed, unsought, and lost, but still valuable. Go look for it. 

[1]David Owen, “Penny Dreadful,” The New Yorker, March 31, 2008, p. 62.