Laundry detergent isn’t a staple you can forgo—but you don’t need to keep buying it. Make it instead, with 3 simple ingredients. Grate a bar of Fels-Naptha and mix it with 1 cup of borax, and 1 cup of washing soda. Mix it for several minutes in a blender or food processor to make a fine powdered consistency that will easily dissolve in water. Keep the mixture in a sealed container and use 1 tablespoon for every load of laundry (or 2–3 tablespoons for extra dirty loads).