I carried marbles in my pocket as a kid. Same place if I had money then...which I normally didnt have...but think about it...pull your marbles out to play..a dime falls out unnoticed....a marble rolls to the grass unfound...
I bought a house once and when digging for a garden I found all kinds of marbles. Turns out the previous owner, when he was a kid, had a shanty built there where they played marbles. He got a good kick out of me finding them. Still got em 25 years later, lol
Al