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Best Sellers


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  1. Camping


    Build a glowing campfire, cook up tasty treats, and make a beary fun backpack!
  2. Young Chemist (2-Pack)

    $51.95 $54.90 value

    Ignite a passion for science at an early age and save when purchased as a pack. Recommended for Ages 5+. Qualifies for free shipping!
  3. Koala Crate Classics (5-Pack)

    $109.95 $124.75 value

    Shop for Koala favorites and save when purchased as a pack. Qualifies for free shipping!
  4. Rainbows


    Create a scene against a rainbow of colors in a stained glass work of art!
  5. Speedy Race Cars


    Create a custom speedy race car and use black washi tape to create a speedway on any surface.
  6. Colorful Chemistry


    Learn about the scientific method, then put together a bubbly chemical reaction in your own fab chemistry lab. Try other color mixing experiments, make some colorful art, and learn about everyday chemical reactions.
  7. Little Artist


    Encourage little artists with a color-block painting project, abstract bead sculpture, and a personalized art smock.
  8. Koala Crate Ultimate (8-Pack)

    $164.95 $199.60 value

    Shop for Koala favorites and save when purchased as a pack. Qualifies for free shipping!
  9. Medieval


    Build a working catapult, "dragon" wagon, and a royal castle to explore medieval times!
  10. Butterfly Wings


    Personalize the butterfly wings set with felt stickers and velvet ribbon before flying away!


Showing 10 of 10

Best-Selling Science Kits & STEM Toys

Rich scientific learning needs to have a few of these key elements: curious minds, hands-on projects, quality materials, and fun results. Popular science kits and STEM toys contain all you need to share exciting discoveries with the ones you love most.

With a healthy dose of enthusiasm and the right project, your little scientist will have an unforgettable experience! KiwiCo offers popular science kits that give curious adventurers the ability to tinker, test, and try out their theories! Science can be fun, and that's a theory that can be proven with just the right experiment!