Playdough is a classic childhood toy everyone can have fun with, and it's so easy to make at home you'll never buy that stinky store variety again.    Basic ingredient ratios:  2 cups flour  2 cups warm water  1 cup salt  2 Tablespoons vegetable oil  1 Tablespoon cream of tartar (optional for improved elasticity)    food coloring (liquid, powder, or unsweetened drink mix)  scented oils
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