Oobleck (Messy Mixture) - from Dr. Suess 1 box Cornstarch 1 cup Water Add water to cornstarch slowly, mixing well. You end up with OOBLECK! Just add odd kitchen utensils or plastic containers (such as a strawberry basket) and let the kids dip and drool. You may add food coloring to tint the mixture. This mixture is best made in a very large mixing bowl to give the children room to play with it properly. If oobleck gets outside of bowl and onto other surfaces, allow to harden then just scrape off.