You can put this solution on YOUR website! You can exchange them with a CoinStar machine.
Depending on the machine - it can redeem them in a cash voucher or gift card.
Find a machine near you by googling "coinstar locations"
You can put this solution on YOUR website! Where can I cash in quarters, dimes, nickles and pennies? I have about 5 gallons.
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You can use Coinstar, but they take 7 or 8% of it.
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I would throw the pennies away, or give them to Goodwill, and get coin rolls from the bank for the rest of it.