1 c. cornstarch
2 c. baking soda
1 1/4 c. cold water
Food coloring

Add food coloring to water and mix well with other ingredients in a saucepan. Cook over medium heat about 4 minutes, stirring constantly until mixture thickens to the consistency of mashed potatoes. Cover with damp cloth to cool. Knead until smooth. Objects may be painted after they dry overnight. Store in airtight container.