Do you throw away pennies? Seriously, I know people who do. Instead, collect the copper and dump it into your local Coinstar machine, then press donate. A list of non-profits will appear. Coinstar machines are located at all Winn-Dixies and select CVS pharmacies. Check here for locations.
My contribution: $9.70 to the Leukemia & Lymphoma Society. I had to travel to three Winn-Dixies in three parishes (St. Bernard, Jefferson and finally St. Tammany) before finding a Coinstar machine that worked. But I really was surprised that one small Mardi Gras cup full of pennies added up to almost $10.