Living a stone throw away from Maine I usually pick out 5-6 dollars in change per 2 boxes of nickels. Back when we (Canada) still had a penny the local convenient store made a killing with American pennies.
I like to hop the border, buy half dollars by the roll, keep the silver in one pile and re-roll the rest. Does anyone else "hoard" foreign coins found CRH to make some money on the exchange rate?