Here is my recipe for homemade no cook play dough.
2 cups of flour (will need additional flour when kneading)
1 cup of salt
1 cup of water
1tbsp of oil (vegetable oil will do but baby oil works too if you run out like I did today)
Food colouring (how much depends on how bright you want the colour)
Add flour and salt together, mix water, oil and food colouring and then pour it into mixture. Mix together until smooth and add additional flour until you have a kneadable dough. Then sprinkle flour on a flat surface and knead until you are happy with it. Roll into a ball.
Then let the kids have fun.