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Rigamajig Basic Builder Kit


Our flagship product, the Rigamajig Basic Builder is a large-scale, loose parts building and engineering kit. The Basic Builder Kit inspires STEM / STEAM learning by empowering children to follow their curiosity through hands-on, open-ended, creative, and collaborative play. Big pieces, big ideas, endless possibilities!

Sturdy, durable, and made-to-last, the Basic Builder Kit is curriculum-compatible and ideal for schools, children’s and science museums, libraries, community organizations, maker spaces, camps, recreation centers, after-school programs, or anywhere that kids gather to play and learn!

More Details
To use a purchase order, please email hi@rigamajig.com. For orders shipped outside the USA and Canada, please email hi@rigamajig.com, tell us what you'd like to buy, and we'll respond within 24 hours.
Click here for assembly instructions.

More about Rigamajig Basic Builder Kit

  • Price includes shipping within the 48 contiguous United States and 10 Canadian Provinces.
  • Shipping is not included in the purchase price for orders shipped outside the 48 contiguous United States and 10 Canadian Provinces, or to PO/FPO/APO addresses. Please email us at hi@rigamajig.com, tell us what you'd like to buy, and we'll respond within 24 hours. It's fast and easy. Thank you!
  • Need to buy using a purchase order? No problem! Please email us at hi@rigamajig.com.
  • Contains 260+ parts
  • Made and manufactured in the United States.
  • Plastic parts made from 100% recycled nylon.
  • Wood parts made from the highest grade Baltic birch plywood and finished with a non-hazardous, air-pollutant-free finish.
  • Includes two milk crates for small piece storage.
  • Cart with contents weighs approximately 149 lbs.
  • Requires a minimum play area of 100 square feet (per kit)
  • Complies with U.S. Consumer Product Safety Testing for Children’s Toys, and tested for ages 3+.
  • Portable and sealable.
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The Simple Machines Add-On Kit enables young collaborators to mechanize their Rigamajig Basic Builder Kit, making simple or complex systems that exemplify the principles of mechanics, direction, and force. Created and designed from educators’ feedback, our Simple Machines Add-On Kit expands the Rigamajig Basic Builder Kit to provide an additional perspective and range of STEAM-based discovery, tinkering, and exploration!
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Chutes Add-On Kit

Our Chutes Add-On Kit transforms your Rigamajig Basic Builder Kit into a dynamic system of chutes and ramps, enabling children to experiment with cause and effect, gravity, and systems thinking. Rube Goldberg in action! Creative young builders can create their contraptions using balls made of assorted materials and sizes included with the Chutes Add-On, or with marbles, wheels, water, or anything else they can imagine. The exciting process of planning, collaborating, and building a ball or marble run just might become your favorite Rigamajig project!
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Locomotion Add-On Kit

Expand your Rigamajig Basic Builder Kit with our Locomotion Add-On Kit to make rolling, spinning, mobile contraptions! Axles and axle bolts enable wheels, propellers, pinwheels, and more to spin freely, while swivel casters provide an immensely versatile range of motion. Our Locomotion Add-On Kit includes plenty of hexnuts to secure everything, and with eight long lengths of our soft, easy-untie rope, you’ll always have enough to pull, fasten, or practice knots. We can’t wait to see what you create!
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