Pennies have managed to hold onto their niche in the economy much longer than most people would have thought. There's not much you can buy for a penny, but they still seem to accumulate around the house, in purses and in the car. In addition to being all over the place, they also tarnish very, very quickly. Fortunately, there's a very easy way to clean them.
Put some vinegar or lemon juice in a glass or plastic container. Make sure you have enough to completely cover the pennies you want to clean.
Add some salt and stir. All the salt should dissolve in the solution.
Add the dirty pennies.
Let the solution sit for 10 to 15 minutes. Remove the pennies and run them under fresh water.
Dry them off. Your pennies now look brand new!