Design Squad engineers Judy and Adam show you how to make a mini-catapult. Design Squad engineers Judy and Adam show you how to make a mini-catapult in the Pop Fly challenge!
Mini-bombs away! We have shown you USB missile launchers, but if you really want to be subtle, you will need the Catapult Watch. Backyard Artillery claims that it will shoot pebbles, pop corn kernels, ...
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