Dale the Magical Balloon Dude will show you how to make a marshmallow shooter using a balloon in this how to video. The balloon you will need is a 321 cubed balloon. Blow it up about 3/4 of the way full and tie a knot. Take the marshmallow and push it into the end of the balloon. Grab it with the hand holding the balloon. Let go of the inside of the balloon to launch the marshmallow. You can use an 11 inch round balloon instead for more power. Use the same technique to launch it. Never look at the marshmallow while it is loaded. You know now how to create and operate a marshmallow shooter.