I've made this play dough many times for the nephews with great play reviews.
Play Dough- No cook
1 cup flour- any kind of plain flour, not self rising
1/4 cup water
1/4 tsp food color- experiment with mixing colors, the new neon ones are fun.
1 1/2 tsp vegetable oil
In a small mixing bowl add the flour. In a measuring cup mix water, food coloring and oil, add to flour in mixing bowl. This will be very messy and sticky not very good for the kiddos to get into. Mix with a spoon or your hands, the hands work better for this. Keep mixing and kneading until it reaches the consistency of play dough, will take maybe two minutes. If the play dough seems sticky add a little more flour. I haven't tried doubling or tripling this since each nephew wants a different color. This play dough keeps up to a week if refrigerated in a baggy or other sealed container. Don't try to dry any "creations" the oil in the play dough will prevent it from getting hard enough.