Instructions: 1. mix a cup of water with two cups of cornstarch. stir until goopy. you should feel resistance when stirring quickly, and no resistance when stirring slowly. You can easily make a larger stress ball, or multiple at one time, by simply doubling or tripling the recipe. once a large ball is formed in can be divided into as many smaller balls as you see fit. corn starch is by far the best ingredient to use for this recipe. See more videos for how to make a stress ball without flour or cornstarch. To make a stress ball, slip a funnel into the neck of a sturdy balloon. if you want to make a firm stress ball, pour flour, baking soda, or cornstarch into the balloon. if you want your stress ball to be softer, use lentils, split peas, or fine play sand. you can also mix a little rice into your filling if you like. How to make stress balls with balloons and flour! stressed out, no worries, time to diy stress ball with balloons and flour only! please check out our previous video!...