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Motion-Sensing Spider

  1. Grades 3-5
  2. Grades 6-8

Price: $29.95

Engineer a spooky spider prank that’s so fun, it’s scary! Customize an eerie eight-legged pal, then engineer a retracting mechanism using springs and gears. Hook up the electronics to help your creepy, crawly friend sense motion and drop down when someone walks by. Hide your spider out of sight and let the pranks begin!

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Why it’s awesome

  1. inside motor and gears of motion-sensing spider

    Eerie electronics

    Build a device that detects when someone walks by.

  2. person being scared by spider dropped from top of doorway

    Trick or treat

    Set up your spider to prank friends and family.

  3. picture of spider

    Spider senses

    Learn all about spiders in the Spider Insider Guide.

What’s included?

  • wood set (7 pcs)

  • motion sensor

  • motor

  • computer chip

  • tension rod

  • battery pack with 3 AA batteries included

  • Spool

  • 2 gears

  • 5 hooks

  • 4 mounting strips

  • sticky foam sheet

  • 2 covers

  • 2 foam arcs

  • 15 rubber rings

  • 6 screws

  • 4 nuts

  • spring

  • winder knob

  • String

  • pom-pom

  • 4 chenille stems

  • 2 mini masks

  • wiggle eye sheet

  • screwdriver

  • 4 hook-and-loop strips

  • hanging template

  • illustrated instruction booklet

  • spider learning guide

Topics explored

  1. Electronics

  2. Motion Detection

  3. Halloween fun

From the desk of the product designer:

Behind the design

“When we tested our retracting mechanism, we noticed that the gears made a creepy zipping sound that was just as startling as the motion. This ended up giving the spider an extra fear factor we loved!”

- KiwiCo Product Designer

By the numbers

51

Employees scared in the office

6

Spider prototypes tested

13

Total wiggle eyes applied to one spider

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