Eggshell Chalk

4-5 egg shells
1 tsp. flour
1 tsp. very hot water
drops of food coloring

Wash and dry egg shells completely. Place clean and dry egg shells in a small bowl and grind into fine dust. When egg shells are almost completely ground, discard any larger pieces. In a separate bowl, place flour and hot water. Mix well and add 1 tablespoon of the egg shell powder, stirring until a paste forms. Add drops of color and continue to mix. Remove mixture from bowl and shape into a log. Wrap mixture tightly with a strip of paper towel. Set aside chalk piece and let dry for about 3 days, until hardened. Carefully unwrap paper towel to reveal chalk. Use on Sidewalks only.