Simply play dough is flour and water but the best variation I have seen has a couple more ingredients. Take 2 cups each of flour and water, a cup of salt, one tablespoon of vegetable oil and one tablespoon of cream of tartar. The cream of tartar will make the dough more elastic. Mix all the ingredients and stir over low heat until it is about like mashed potato in it’s thickness and consistency. Cook until it is not sticky any longer. Put it on a mat or cutting board and knead it until it is nice and smooth. Add some food coloring (or kool aid mix!!). Play and store!!