I ran a coffee truck business for years. I always tossed the US coin in a bucket to save for those trips down south that I almost never took. 1 bucket turned into 2 and they just kept multiplying.
My problem now is that to get the exchange rate, I need to go to the states and deposit the coin. I wonder what they will say at the border if I try to cross with what I estimate will be about 10 grand in change.