Motion-Sensing Spider Kit
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Mochi Mural by Amanda Jane Jones
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Happy Boxes
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Happy Dots
Engineer a spooky spider prank that’s scary fun! 🕷️ Kids build and customize their own creepy crawly spider, then explore hands-on STEM learning by assembling a retracting mechanism with springs and gears. Add the electronic motion sensor so the spider drops down when someone walks by—perfect for jump scares and laughs! Great for classrooms, Halloween displays, or year-round pranksters, this interactive science and engineering kit sparks creativity, problem-solving, and endless fun.
Why Choose Mochi?
Made in the Usa
Our supply chain is made up of small businesses right here in the USA.
Small Batch
To minimize waste and keep our designs nimble
Gender Neutral
Mix-and-matchable pieces you can pass down to a sibling or friend
For Kids + Parents
Kid-friendly designs in parent-pleasing aesthetics