Clay can be made using a combination of salt, flour and water that is then either refrigerated or baked to harden. It is also possible to make a variety of different textured clay using other household ingredients.
To make a basic clay, combine two and a half cups of flour, one cup of salt, one cup of water and food coloring if required in a mixing bowl. Store the mix in a refrigerator to help maintain the clay's integrity. The same ingredients can also be combined over heat with similar results. Combine one cup of flour, one cup of salt, one cup of water and food coloring if required in a pan over low heat. Once the mixture has thickened, remove it from the heat and allow to cool before using it.
To make a clay with similar properties to store bought play dough, combine three and a half cups of flour, one tablespoon cream of tartar, two and a half tablespoons of vegetable oil and food coloring if required in a mixing bowl. Boil two cups of water in a saucepan and slowly add the water to the dry ingredients to produce a clay similar to play dough. The clay should be stored at room temperature in a sealed container.