Rigamajig creator Cas Holman featured on Netflix’s “Abstract: The Art of Design.” Watch Now →

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Rigamajig Basic Builder is a large-scale building kit that sparks STEM/STEAM learning through collaborative and open-ended play. Ideal for museums and libraries as an immersive, interactive exhibit and activity!

Rigamajig fosters fun and cooperative STEM/STEAM learning communities through hands-on, collaborative, and child-directed play.


Playing with Rigamajig promotes STEM/STEAM principles through cooperative, inquiry-based learning that provides kids opportunities for creativity, innovation, collaboration, and critical thinking.


Rigamajig motivates playful, cooperative learning where kids play within a community and share resources.


With no instructions or right-and-wrong answers, children are free to imagine what to make, and to figure out how to make it. Invention 101!

Rigamajig Basic Builder Kit

Rigamajig Basic Builder is a large-scale building kit that inspires collaborative and creative hands-on play, discovery, innovation, problem-solving skills, and STEM/STEAM learning. Ideal for play spaces and as permanent exhibitions in children’s and science museums, and libraries!
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Two children playing with the Rigamajig Basic Builder Kit.

Hear what museum and library educators 
love about Rigamajig!

Resources for Museums & Libraries

Getting Started

Helpful introductory guidance for educators on bringing Rigamajig to your museum or library.
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Project Plans

We've developed these 20+ research-based Project Plans to help educators inspire kids in their communities!
View Project Plans


Looking to apply for a grant to purchase your Rigamajig? We’ve done the research for you! Here’s 25 foundations and organizations that provide education and STEM/STEAM grants to museums and libraries.
Learn More

Rigamajig Workshops

Our freestanding Workshop units enhance play value by allowing kids to see all the Rigamajig parts and pieces displayed, helping them to imagine what they can create and build! Workshops are a great way to establish an interactive exhibit and play area within your museum, library, or maker space!
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Two children playing with Rigamajig Basic Builder Workshop.

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