Award-winning STEM toys

Build it. Play it.
Learn how it works.

Wooden STEM kits, designed by engineers. No glue, no tools.

Shop Bestsellers
🔧 Easy to build
🧠 Learns physics by playing
🏆 Global award winner
🚚

Ships Across the US

Now shipping all across the US

🧩

Free Part Replacement

Lost a piece? It's on us

🌱

Sustainable MDF

Kits made from eco-friendly MDF

🎁

Gift-Ready

Birthdays, holidays & more

Bestsellers

Kits kids can't put down

View all kits →

What they get out of it

  • PatienceA picture manual to follow, one step at a time.
  • Problem solvingWhen a piece doesn’t fit, they work out why.
  • Pride“I made this!” And it really works.
Shop by age

The right build for every builder

Every kit is designed around what kids can do — and what they're ready to learn next.

8+

Young Engineers

Complex builds with hydraulics, gears and circuits.

Shop 8+ →
6+

Curious Makers

Launchers, cars and games powered by real mechanics.

Shop 6+ →
3+

Little Tinkerers

Chunky parts, simple steps, big "I did it!" moments.

Shop 3+ →

Not sure which kit? Try the kit finder →

See them in action

Real kids, real play

Shop by theme

What is your kid into?

Pick a theme and see the kits that match.

Proudly award-winning

  • Australian Toy Association 2026 Finalist, Educational or STEAM Product of the Year
  • Årets Legetøj 2025, Kreativitet & Konstruktion
  • Parents Best Toys 2025
  • Toy of the Year Awards 2022 Finalist
  • ASTRA Best Toys for Kids 2021 Finalist
  • TIME Best Toys of 2020
  • Australian Toy Association 2026 Finalist, Educational or STEAM Product of the Year
  • Årets Legetøj 2025, Kreativitet & Konstruktion
  • Parents Best Toys 2025
  • Toy of the Year Awards 2022 Finalist
  • ASTRA Best Toys for Kids 2021 Finalist
  • TIME Best Toys of 2020
  • Australian Toy Association 2026 Finalist, Educational or STEAM Product of the Year
  • Årets Legetøj 2025, Kreativitet & Konstruktion
  • Parents Best Toys 2025
  • Toy of the Year Awards 2022 Finalist
  • ASTRA Best Toys for Kids 2021 Finalist
  • TIME Best Toys of 2020

Over 10 million kits delivered worldwide!

Get ready for serious fun and learning with #Smartivity!

Boy with his Music Machine and Pinball builds

He loves building things and working through problems. These builds have been a great extension to just using legos and they are so fun for him to play with!

★★★★★
Boy wearing the Mechanical Hand he built

I love to build things. I'm happy when I can do it by myself.

★★★★★
Girl holding her Rocket Launcher build
Boy playing his Pinball Machine build

I can make lots of things and then I can play with it and it gives me a creative mind.

★★★★★
Kids playing Mini Golf they built

It keeps the children engaged and their mind gets sharper

★★★★★
Girl holding her Hydraulic Plane Launcher build
Just landed

New arrivals

See all new arrivals →
We've got you

Missing a part?

Pieces get lost — it happens. Request a replacement and we'll ship it free.

Request a part

Join the Smartivity Club

Get 10% off your first order, plus new-kit drops and weekend build ideas.