Cotton ball rocks! Ingredients: 2 cups flour, 2 cups water, Food coloring, Cotton Balls. Directions: 1. Mix flour and water. 2. Pour into 4 different bowls; add food coloring to each bowl. 3. Dip cotton balls into mixture; covering completely. 4. Place on greased cookie sheets. 5. Bake at 300 for 45 minutes. 6. Enjoy smashing to discover cotton ball or enjoy your rocks.