Scrunch Buggy - Wind Up Caterpillar

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This unique wind up simulates the movement of an inch worm or caterpillar.
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This unique wind up simulates the movement of an inch worm or caterpillar. Kids love the way it crawls along bending and then stretching its back like a real caterpillar. Use it to teach potential (or stored) energy and kinetic (or movement) energy. A great demonstration of how wind up toys work.

Age: 5 +

What you get

A wind up caterpillar (approx. 9cm long). Comes in green or orange.

How does it work?

Simply wind the little white handle and off he goes. Use it to engage children in a lesson on how coils and springs store energy. As you wind, explain that the spring inside is getting tighter and smaller, storing your muscle energy. When you stop winding, the coil unwinds releasing your muscle energy in the form of movement. You will have a captive audience with this little critter.


  • Kinetic (movement) and potential (stored) energy.
  • Science of toys coiled, spring or wind up energy. Materials and design.
  • Repeatable mechanical deformation.


A quality wind up.

WARNING: CHOKING HAZARD Small Parts. Not for children under 3 years.

More Information
Length (cm) 8
Width (cm) 4
Height (cm) 4
Age Group 3-4 Years, 5-6 Years, 7-8 Years
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