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Two children playing with the Rigamajig Basic Builder Kit.
Rigamajig Basic Builder Kit - Critter GIF
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Rigamajig Basic Builder Specsheet 2023
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Rigamajig Basic Builder Kit

Original price was: $3,950.00.Current price is: $3,752.50.

Limited Time: End-of-Fiscal-Year Savings

Special offer ends May 31, 2025 – Order now! POs accepted & expedited – Request your personalized quote today.

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 kids gather to play and learn!

More Details
Sales tax is automatically applied to purchases delivered to NY, RI, and CA. 

For purchase orders, tax-exempt purchases to NY, RI, and CA, and shipping outside the contiguous 48 U.S. states, please use the 'Request a Quote' form.

More about Rigamajig Basic Builder Kit

  • Complies with U.S. Consumer Product Safety Testing for Children’s Toys and tested for ages 3+.
  • Intuitive assembly instructions for easy setup.
  • Requires a minimum play area of 100 square feet (per kit).
  • Made and manufactured in the U.S.
  • Fabricated using the highest grade Baltic birch plywood and finished with a HAPS-free (Hazardous Air Pollutant-free) finish.
  • Wing bolts, hex nuts, and brackets are made from reinforced 100% recycled nylon.
  • Contains over 260 parts, including wooden planks, wheels, pulleys, hooks, brackets, wing bolts, nuts, ropes, a cart with casters, and more.
  • Comes with two milk crates for convenient storage of small pieces.
  • The cart, when filled, weighs approximately 149 lbs.
  • Cart cover available for separate purchase.
  • Expandable with Add-Ons: Simple Machines, Chutes, and Locomotion.
  • Purchases with delivery in NY, RI, and CA are subject to sales tax.
  • Price does not include shipping.
  • Shipping is available at checkout for the 48 contiguous United States only.
  • For shipping to Alaska, Hawaii, Canada, and other international locations, please fill out the 'Request a Quote' form.
  • Purchase orders and payments via check or bank transfer require filling out the 'Request a Quote' form.
  • Interested in creating a focused exhibit and play area? Use it together with an interactive display and storage station: Rigamajig Workshops.
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Related Products

Here are more Rigamajig products that you might like!

Simple Machines Add-On Kit

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.
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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!
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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.
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