Baking soda is one item that you can purchase that will help green your life in many ways.  Baking soda can be used for so many things.  I purchase a large bag of baking soda from Costco and use it for everything from cleaning to baking.  It is all natural, cheap, and green!  Here are some of my favorite uses for baking soda:

• Do you have an upset stomach?  Try dissolving a 1/4 teaspoon of baking soda in a cup of warm water.  Drink over the course of a half hour to help settle the nausea and reduce stomach acid.
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• Does your vacuum cleaner smell when you use it?  Sprinkle some baking soda in the bag or canister and you'll eliminate the odor.  If you have some essential oils, you can mix those in with the baking soda before you add it to the canister.
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• Run out of toothpaste? A small amount of baking soda on your toothbrush will help get your teeth nice and clean and make your breath smell fresh.
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  More at the source: Savings.com