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Sci-Tech Labs: Mini Marshmallow Launcher
Marshmallow DIY Catapult Challenge! - Science & Stuff
Marshmallow Catapult for Kids
Official S8 Launcher For Marshmallow & Nougat - With 'Hide Apps' Feature
Mazooka Marshmallow Bazooka
DIY Mallow Blaster! TKOR Shows You How To Make a DIY Marshmallow Shooter!
Family Friendly Rocket and Marshmallow Launcher Great Fun!
How to make a lollipop/popsicle stick marshmallow catapult -- by Science Ireland