SKU: 4387305703

Rigamajig Basic Builder Kit

Sale price$3329.55 Regular price$3699.50
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

Rigamajig Basic Builder KitDesigned by Cas Holman, Rigamajig is a building system of carefully shaped wooden planks, wheels, pulleys, nuts, bolts and rope designed for collaborative makers to follow their curiosity through play. Engaging the inquisitive mind and creative spirit, Rigamajig empowers children to think three dimensionally. Children often say this isnt a toy, this is real! as they build machines and structures larger than themselves. Rigamajig inspires group STEM

Designed by Cas Holman, Rigamajig is a building system of carefully shaped wooden planks, wheels, pulleys, nuts, bolts and rope designed for collaborative makers to follow their curiosity through play.

Engaging the inquisitive mind and creative spirit, Rigamajig empowers children to think three dimensionally. Children often say “this isn’t a toy, this is real!” as they build machines and structures larger than themselves.

Rigamajig inspires group STEM problem solving and play in three dimensions to explore mechanics, engineering and structure. (Age 3+)

Rigamajig Basic Builder Kit is Ideal for classrooms, children’s museums, and public libraries, the solid wood 2cm (3/4”) thick planks range from 30- 110 cm (12”- 44”) in length. The Basic Builder Kit has 263 parts in total.

 

 

 

 


Benefits of Rigamajig

 

Promotes playful, cooperative learning

Rigamajig creates playful, cooperative learning communities, through means of collaborative building and child-directed play.The kit enables easily accessible, cognitively challenging play opportunities for children of any age in any environment.

 

Enhances STEM and STEAM learning 

Rigamajig fits with principles of STEM and STEAM education, which promote focus on science, technology, engineering, math, and art through hands-on, inquiry-based learning to provide children opportunities for creativity, innovation, collaboration, and critical thinking.

 

Develops problem-solving skills

Children simultaneously practice problem solving while designing and playing with their technological inventions. They create and work with simple machines (e.g. pulleys, ramps, and screws) as a means to create new, more complex machines.

 

Encourages cognitive thinking and investigations

Play, fantasy, and imagination are all part of children's everyday cognitive thinking and investigations. It is when these are all manifested in a single activity that children invest and fully engage in problem solving and amazing feats of creativity.

 

 

Quality Wood Manufacturing

 

The Rigamajig Basic Builder Kit and Simple Machines Add-on Kit have been fabricated using the highest grade Baltic Birch Plywood and finished by hand in Rhode Island.

The rope is woven and the canvas buckets sewn in Rhode Island as well. Wingbolts and Hexnuts are made in New York State from 100% recycled nylon. The brackets are made in Pennsylvania. 

 

 

What's the difference between Rigamajig and Rigamajig Jr.?

 

Rigamajig is much larger, and has many more parts to share. It’s intended for 2-20 kids to play together in a supervised environment. Teachers across the US have been developing lesson plans that use Rigamajig to learn simple machines, mathematics, STEAM topics, and much much more. Best yet, the students design ways to use it in the classroom and all around the school.

Rigamajig Jr. is great for 1-4 kids to play with. It requires less open space, and stores away in it’s own gym-bag sized duffel.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 4387305703

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Verified Purchase
EmeraldSunset
West Palm Beach, US
★★★★★ 1
not good
Size: 4.2 Fl Oz (Pack of 1)
this burn my skin, this is not Dr. Sebi because is no longer with us.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
M
Major Williams
Fort Morgan, US
★★★★★ 3
On the fence...
Will be updating review after I have used it for more than a week. But so far here are the pros and cons: Pros: Smells good Seems like a little goes a long way Easy to apply Cons: Not sure if this is because I didn't use Sulfate free shampoo, but felt like with one wash I didn't get all the product out of my hair, so when It dried, it still looked greasy/oily Will be washing my hair again with sulfate free shampoo, then will do another application in another day or so. it says to use 2-3 times a week, so I'll use it 3 times a week for 2 weeks and then come back and update my review. But so far, it seams like a good product and for the money, it's a fair value.
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Reviewed in the United States on January 20, 2026
M
Verified Purchase
Megan Thomas
New York, US
★★★★★ 5
Gear set!
Amazing kit lasts a long time and makes my skin so smooth and hydrated.
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Reviewed in the United States on June 5, 2026
J
Verified Purchase
Julene R
Birmingham, US
★★★★★ 5
good product
Effectiveness: This serum focuses on brightening, uneven tone, and early signs of aging using two stabilized forms of vitamin C plus supportive antioxidants. With consistent use, it can help improve overall radiance and reduce the look of dark spots gradually rather than delivering fast, dramatic fading. Texture & Application: Lightweight, silky, and smooth. It spreads easily and absorbs quickly without feeling greasy or heavy. The airless pump helps keep the formula stable and prevents oxidation, which is important for vitamin C products. Key Ingredients Performance: Vitamin C (two stabilized forms) supports brightness and antioxidant protection Kojic acid ester helps even skin tone over time Oryzanol (rice bran antioxidant) helps enhance brightening effects and supports skin defense Overall, it’s a gentler vitamin C approach compared to high-strength L-ascorbic acid serums, making it more suitable for sensitive or beginner users. Skin Feel / Finish: Leaves a soft, natural finish with no sticky residue. It layers well under moisturizer and sunscreen and doesn’t pill when used correctly. Suitable for daily AM or PM use. Durability of Results: Improvements are gradual—typically noticeable after several weeks of consistent use. Best results come with daily sunscreen use since vitamin C works synergistically with UV protection. Value: Very strong value for a budget-friendly serum. It delivers multiple brightening ingredients at a low price point, making it accessible for everyday skincare routines. Overall: A gentle, affordable vitamin C serum that prioritizes steady brightening, antioxidant support, and skin tone improvement over high-intensity results. Best for beginners, sensitive skin, or anyone wanting a simple daily glow-boosting step.
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Reviewed in the United States on May 13, 2026
L
Verified Purchase
Luisana
Birmingham, US
★★★★★ 5
Amazing Vitamin C at an Affordable Price!
This Vitamin C serum from Good Molecules is honestly one of the best I’ve tried! The texture feels so smooth and lightweight on the skin, it absorbs quickly and leaves my face feeling hydrated without being sticky. It’s super effective for fading acne scars and dark spots, and I always notice extra brightness and glow the next morning after using it. What makes it even better is how affordable it is compared to other Vitamin C serums—such great quality for the price! Plus, the bottle lasts a long time since just two pumps are enough for the entire face. Gentle scent, hydrating, effective, and budget-friendly… I couldn’t recommend it more
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Reviewed in the United States on October 3, 2025

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