Using an untoppable bottle to help elementary school students stop throwing bottles

He Chenguang’s Toys

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Use a spray to help kids quit smoking

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Make an Ultra-Cool Ballpoint Pen Spiderweb Launcher with a Ballpoint Pen

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Homemade untoppable bottle—challenge passersby to toss bottles!

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How to make a big fish fishing tool with correction tape

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Teaching You How to Make Super Bubbles at Zero Cost

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Building the farthest-flying paper airplane to help kids quit playing with paper airplanes

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The tutorial for Eros Arrow version 4.0 is here

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The Strangest Olympic Marathon Ever: St. Louis 1904

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Ballpoint Pen Spider Silk Launcher Tutorial is Here

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𝘛𝘩𝘦 𝘉𝘦𝘴𝘵 𝘛𝘩𝘪𝘯𝘨 𝘦𝘱 10

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Creating scratch-resistant holographic projections with a flat panel

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520 Must-Learn Confession Tool Tutorial

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Teach you how to make your own super-large fireworks at zero cost

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Zero-Cost DIY Giant Firework Creates a Snowstorm

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How harmful are cigarette cards?

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Make mosquito-repellent smoke bombs at zero cost

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A modern version of the Humen * Destruction: cards to help children quit smoking

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Teach you how to make a pulse transmitter at zero cost!

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Achieve Ice Palm at zero cost

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