Quarters: Pay phones, pop machines , shopping carts. And, Oh yeah, they're also money!
Payphones: They still exist in MANY places and a little more situational awareness will probably reveal them. I realize that I'm in the minority of non-cel phone EDCers, and am probably inclined to be more aware of these things, but if haven't you ever had a cell phone that stopped working?
Quite literally there are no more pay phones in my town anymore. The local paper did a thing on "the last pay phone" being removed from the main avenue.