That is a good policy for found money, I will have to do that from now on.
There is a catch to that policy. If you earnestly begin doing that you will start seeing other little things you do that are not quite righteous and you will start to change those things, too. At least that is my experience.
Coins smaller than quarters go into the whirligig things in some of the stores for donating money to “feed the children” or some such cause- for the amusement of small children who are hanging around.