If you don’t know what oobleck is it’s a liquid/solid mixture of potato flour and water. I think you can also use cornstarch instead of potato flour. When you put pressure on it it will be solid but if you touch it gently it will be liquid. I made it and colored it blue, it is really fun to play with and really satisfiying to feel. If you have a chance you should totally make it, it would be worth it 🙂