Other than the left over silver coins still in circulation. Pennies and nickels are worth more than face. I'm doing the same thing as you Red. I have nothing to lose, nothing more than face invested. If I get tired of them and dump them it really cost me nothing and I recover all my money. If copper and nickel shoot up.Which is possible depending on what goes on in the world, It would be an easy win, if enough saved!
Plus no one is going to break in and run off down the road with 5gal. buckets of pennies! lol I actually had a bucket split when I was moving, they are heavy!