At KiwiCo, we design award-winning, hands-on STEM kits for kids ages 3-16+. We deliver them by mail and call them crates. Each crate explores a new concept in science, technology, or engineering in a fresh way that's seriously fun & profoundly enriching. We take big ideas and make them accessible and fun for kids of all ages!Learn more about what sets KiwiCo apart »
Best Science Kits for Ages 14+
Ignite a passion for science with these complete chemistry lab kits. Every project includes all the materials needed, easy to follow step-by-step instructions, and explanations of how everything works.Learn more about KiwiCo Chemistry Sets »
Ignite chemicals and see the colors of combustion. Make a colorful flame lamp and ignite a passion for science!Get It »
Mix up chemical solutions that glow in the dark! With a UV light and a spiral stand to help mix up your solutions, you’re good to glow!Get It »
Build a magnetic mixing machine and spin up a chemical cyclone! Experience some cool color-changing reactions and mix it up — with chemistry!Get It »
KiwiCo Chemistry 3-Pack
Save 38% when purchased as a pack!
Chemistry PackCheck it Out »
Best Science Kits for Ages 9-13+
Explore chaotic motion with a double pendulum and UV light!Get Started with this Crate »
Learn how to build your own hydraulic lifting claw!Get Started with this Crate »
Take a peek inside automaton mechanics! Engineer a hand-cranked, wooden automaton that makes a marble climb stairs.Get Started with this Crate »
Best Science Kits for Ages 5-8
Make a drawing top, a penny top, and a blow top to explore spinning science!Get Started with this Crate »
Use liquid color to see capillary action firsthand!Get Started with this Crate »
Play with angles and momentum while discovering pinball game physics!Get Started with this Crate »
Best Science Kits for Ages 3-4
Build a glowing campfire, cook up tasty treats, and make a beary fun backpack!Get Started with this Crate »
Make a dinosaur costume, create clay fossils, play a footprint matching game.Get Started with this Crate »
Get to know some fascinating reptiles with a soft cuddly snake.Get Started with this Crate »
More Science and Art Kits from KiwiCo
What Sets Our Crates Apart From Typical Science Kits For Kids?
We deliver carefully engineered components along with clear instructions and inspiration.
We ensure that the projects are multi-dimensional with lots of possibilities for kids to tinker and explore.
Every crate is tested rigorously by our experts and lots of kids.
Our projects are enriching, accessible, and fun for kids of all ages.
Each of our crates presents kids with a multi-faceted experience that can last for hours, or even days! Our crates include a magazine with additional science experiments and activities, and lots of rich content to dig deeper into the theme. We also provide online resources and video content for every project, all designed to allow kids to explore further.
Electronics PackCheck it Out »
Awards and Press
- Parents' Choice Gold Award
- Dr. Toy's 10 Best Creative Products Winner
- Academics' Choice Brain Toy Award Winner
- Oppenheim Toy Portfolio Best Toy Award Gold Seal
- Dr. Toy's Best Picks Winner
- Purdue University - Promotes Engineering Thinking & Design