My oldest son collects quarters and we occasionally will head down to the bank to get a roll or two to see what he can find.
At best, we'll find a silver one and add that to his collection of pre-1965 quarters.
Sometimes he'll find a state quarter that he needs or a nicer one that he can upgrade to.
At worst, I end up with a whole mess of quarters that I use for paying to have the trash taken out (25 cents a bag, with contractor bags going for 50 cents).
So it's kind of like gambling, only at the end, you still have the vast majority of your initial outlay. And anything that you might remove from the roll is almost certainly worth more than 25 cents. So really, it's a nice gamble with the odds greatly in my favor.
This one we found peeking out of a plastic quarter roll. It doesn't get much easier than that!