1/2 c. cornstarch
3/4 c. cold water
2 c. hot water
2 tsp. boric acid
Food coloring or tempera paints
Several screw top jars (baby food jars are excellent)

Mix cornstarch with 1/4 cup cold water to make a smooth paste. Add hot water, stirring vigorously to prevent lumps. Cook over low heat, stirring constantly, until mixture begins to boil. Remove from heat and add 1/2 cup cold water and boric acid. Stir until thoroughly mixed. Divide into jars and add coloring agent, mixing thoroughly. To extend life of paint, add 1 tablespoon glycerine to mixture to retard drying process. Large paper bags work well for painting on. Have fun.