Snowball Launchers, Giant-Pumpkin Growers, and Other Cool Contraptions
By Tom Fox
Would you like to create your own robot? Or make a solar-powered pocket watch that keeps going and going and going? Find out how to turn simple stuff into cool contraptions. Some will make your life easier, including a thunderstorm detector and a pet watering dish gizmo that refills automatically. Others, like the giant-pumpkin grower, will make you the hit of the neighborhood-especially on Halloween. So don't wait any longer-get launching right away!
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