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Ages 9-14

A laboratory for hands-on STEM projects

We make science and engineering seriously fun.

Learn more about Tinker Crate from KiwiCo

We believe that STEM learning develops and inspires the next generation of innovators — from scientists, engineers, and leaders alike. The design of Tinker Crate reflects this — infusing STEM concepts into each crate's themes with enriching projects and activities that are accessible and fun for all types of learners.

How it works

  1. Pick a line.


    We offer projects for every age and interest!

  2. Delivered monthly.


    Choose your plan and the first crate ships in 2 days. Pause or cancel anytime.

  3. Serious fun!


    Our science and engineering projects inspire kids to become creative problem solvers.

Our customers love us!

4.7 stars

6,894 reviews

Awesome projects & more in every crate

Sample crate!


Build and fire a real, functioning trebuchet that launches a ping-pong ball up to 10 feet. Then experiment and explore the physics of slings, levers, and air resistance.

Sample crate!

Hydraulic Claw

Build with hydraulics! Hydraulics are used all over, from airplanes to factories to theme parks. Learn how to build your own hydraulic lifting claw and continue experimenting with bonus design challenges.

Sample crate!

Walking Robot

Use this robotics kit to build a walking robot. Play with mechanical motion through robot building and experimentation!

Young engineer with a DIY mechanical hand project from a Tinker Crate engineering box

The perfect STEM crate built for kids 9 to 14

Delivered every month and starts at $17.50 a month, with free shipping in the U.S.!

Over 25 million
crates of fun... and counting!

Check out #KiwiCo for tons more amazing creativity and serious fun.


What is Tinker Crate?

How are the crates designed?

What topics will be explored with Tinker Crate?

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Awesomeness for kids of all ages starting at $17.50

+ Free shipping within the U.S.

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6,894 Tinker Crate reviews

Taylor L

My daughter loves Kiwi Co. She has created some very cool projects and is proud of herself for whats shes created each month. The directions are easy to follow but also develop instruction following skills, which I am thankful for as a parent!

Tinker Crate
Tanya A

Its brilliant, so well designed and its wonderful how absolutely everything you need is included. Also love the unusual creative projects. Ive been recommending it to friends.

Tinker Crate
Shari R

These kids are phenomenal, very educational, and I absolutely love that they come with instructions that my nine-year-old can follow on her own! Not to mention all the pieces come perfectly together for less preparation on my part!

Tinker Crate
William M

Projects are perfectly fun for kids and educational.

Tinker Crate
Visions I

Great quality easy instructions. Challenging follow up work provided in the magazine.

Tinker Crate

Awards & press