Walking Robot

Build a walking robot and experiment with mechanical motion!

Window Garden

Learn about plant science in a hands-on way, by assembling your own suction-cup window planters and growing a set of green bean and squash plants. Learn to take care of your plants, identify new plant parts as they sprout, and make yummy dishes using fruit and other plant parts!

Light-Up Haunted House

Engineer a battery-powered haunted house with LEDs and vellum paper windows (for a ghoulish glowing effect). Customize some cool and creepy decorations (like cotton ball cobwebs and paper tombstones) to finish off your boo-tiful creation.

Bubbling Cauldron

Mix together a witchy brew using citric acid and colored baking soda, use the pump to add water, then watch your cauldron bubble and boil in a creepy chemical reaction!

Electronics (4-Pack)

Shop for advanced electronics favorites and save when purchased as a pack. Qualifies for free shipping!

Christmas Candle Carousel

Santa's Light-Up Workshop

Construct a wooden workshop for Santa and his little elves with this light-up, buildable workshop. Customize it with colorful beads and pipecleaners to create a unique look of your own.

Ice Skating Rink

Learn to tinker with gears and rig up a motor, then decorate a unique winter wonderland scene complete with festive characters. Turn the motor on to make the gears rotate, then watch your snowman, penguin, and gingerbread man spin around and "skate" on the ice!

Loom-Knitted Hats

Santa Wobbler

Use felt and fluff to craft a soft and squishy Santa toy that tips over when you push it... then wobbles right back up again. A wonderful wintertime way to experience the science of weight and balance, all while DIYing your own cheery holiday decor.

Santa and Snowman Wobbler (2-Pack)

With this wobbler bundle, you'll use felt and fluff to craft both a Santa Claus toy and a snowman toy that tip over when you push them... then wobble right back up again! Explore the science of weight and balance, all while DIYIng your own cheery holiday decor!

Snowman Wobbler

Use felt and fluff to craft a soft and squishy snowman that tips over when you push it... then wobbles right back up again. A wonderful way to explore the science of weight and balance, all while DIYing your own cheery holiday decor!

Color-Mixing LED Crystal

Make a color-mixing LED crystal and explore the physics of color!

Headphones

Build the headphone headband, rig up the speaker drivers, and experiment with stereo sound. Explore how speakers and other electroacoustic transducers turn electricity into sound, then learn about the historical technologies that made modern headsets possible.

Slime Circuits

Engineer a basic circuit, using your slime as a conductor to light up an LED (and a love of science!). Then conduct a series of electric experiments that showcase the science of switches, resistance, LED color-mixing, and more!

Balloon Cars

Add racing stripes and patterns to your cars with a hand-powered airbrush tool and stencils. Build out your cars and then, experiment and tinker with the wheels and balloon to see how fast they can go.

Young Chemist (3-Pack)

Ignite a passion for science at an early age and save when purchased as a pack. Recommended for Ages 5+.

Crystal Chemistry Garden

Craft a colorful chemis-tree and garden using felt shapes and liquid watercolors. Then concoct a chemical solution that'll make your garden grow fun and funky crystals over two days, and learn the science behind them!

Bottle Rocket

Get ready to blast off into the air with your very own bottle rocket. Assemble your launcher, rocket, funnel, and launch mixture to experience some extremely fizzy fun.

Professions Starter Kit (3-Pack)

Discover three of the coolest careers around with this crate bundle packed with hands-on learning!

Crystal Ombre Soap Making

Craft and customize two kinds of colorful, crystal-inspired soaps. Explore mineral science, colorful ombre geodes, and chemical reactions.
 
Requires microwave. One project can make 3 unique soaps.

Bubble Machine

Explore bubble chemistry, and how the construction and physics behind your machine helps bubbles form. Experiment with different wand positions and bubble formulas to make bigger, better bubbles, and practice noting your observations like scientists do! Then take a stab at more at-home explorations, from concocting your own super bubble mix, to building a pipe-cleaner bubble wand, to practicing bubble tricks.

Enrichment for Grades 9-12 (3-Pack)

Light-Up Speaker

Explore the science of sound by building an amplification circuit to power your own personal light-up speaker.

Basketball Catapult

Aim, shoot, and score with this physics-friendly crate! Engineer an adjustable catapult and play a spirited game of basketball. Learn about the science of sports, and experiment with different angles and arcs until you're a hoop superstar.

Tinker Crate Engineering (3-Pack)

Shop for Tinker Engineering favorites and save when purchased as a pack. Recommended for Ages 9+. 
Qualifies for free shipping!

Cannonball Launcher

Build a launcher that uses elastic power to shoot foam cannonballs. Contains everything you need to build a working launcher and matching mount.

Hydraulic Claw

Construct your own lifting claw and learn how hydraulic systems work. Continue the experimentation with bonus design challenges.

Light-Chasing Robot

Light up a love of electronics with this light-chasing robot starter kit! Wire up the motors, add the switch, and assemble your robot — all while exploring the science behind circuits and sensors. Customize your robot with one of two skins (a turtle or a beetle), then use the included flashlight to make it get a move on.

Light-Up Lantern

Puzzle together the pieces of an LED-powered lantern, fit for any budding explorer. Sharpen your spatial reasoning skills while crafting with wood, foam, and fabric.

Koala Crate (3-Pack)

Paint a very special water-play mat with a water-dipped paintbrush to reveal the ins-and-outs of Kellan’s neighborhood. Experiment with color mixing, build a fishing rod, and explore different sea creatures! Then make a cuddly snake, play a game with a chameleon, and build a turtle box.

Veterinarian Starter Kit

Check up on a favorite stuffed animal with a stethoscope, syringe, and other handy vet tools. Explore animal anatomy by assembling organ and muscle systems. Play a "find the fracture" game using an x-ray lightbox and a set of animal cards. Learn to read cat and dog body language, and how vets understand animals when they can't talk.

Friction Climbers

Engineer 3 wooden animals to explore the mechanics of friction!

Geometric Laser Projector

Construct a variable speed laser projector, capable of producing a variety of different geometric patterns.

Robots and Coding

Build and decorate your own friendly robot buddy. Create a robot rabbit with a customizable track to run along. Write programs to solve puzzles and send your robot along a path.

Hand-Crank Flashlight

Assemble your own hand-crank flashlight, great for outdoor adventures, emergencies, or just battery-free fun.

Solar System

Create your own solar system mobile, complete with a light-up sun in the center.

Butterfly Wings

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

Froggie Lab Dissection

Open Froggie up, then use a pair of kid-friendly tweezers to explore the major internal organs that you and Froggie have in common — heart, lungs, stomach, and more. Then play a diagnosis game to figure out why Froggie isn't feeling well. 
Froggie comes as a finished product, not a DIY building kit.

Light-Up Wire Art

Build two custom electronic art pieces with EL wire. Choose from five existing templates, or create your own from scratch.

Monster Mix & Match Art Pack

Trace pairs of stencils to customize a monster body, then rub colored pencils over texture cards to color in your monsters. Top it all off by adding stickers, or drawing your own finishing touches, to bring your monster friends to life. 
Monster Mix & Match Art Pack comes as a finished product, not a DIY building kit.

Punch Needle Pillow

Take a stab at punch needle art, decorating, sewing, and stuffing a punch-needle pillow.

Glow Lab

Explore UV light and mix up 3 solutions that glow in the dark. Explore the chemistry of fluorescence, phosphorescence, and chemiluminescence. 
Delivery note: This item will ship separately from any other items in your order. Your entire order only qualifies for Standard Shipping (delivered within 3-10 business days).

Electrochemistry Lab

Produce an oxidation reaction that "eats" up aluminum foil. Test a voltmeter to learn about electric potential, and build a coin battery-powered LED light. Then put everything you learned together to engineer a clock that runs on just saltwater and strips of metal! 
Delivery note: Electrochemistry Lab is only eligible for Ground Shipping within the Contiguous United States. This item will ship separately from any other items in your order. Your entire order only qualifies for Standard Shipping (delivered within 3-10 business days).

Kiwi Crate Mechanics (3-Pack)

Shop for Mechanics favorites and save when purchased as a pack. Recommended for Ages 5-8+. 
Qualifies for free shipping!

Pegboard Games & Puzzles

Play 11 different games — from Tic-Tac-Toe to Tapatan — using a single travel-friendly pegboard and a set of removable game boards and game pegs. 
Pegboard Games & Puzzles comes as a finished product, not a DIY building kit.

Astronaut Starter Kit

Build and launch a pair of model orbiter spaceships using the power of pumps. Paint a set of model planets, then construct a miniature solar system that really spins. Explore the ins-and-outs of space travel — from the history of space exploration, to the challenges of astronaut training, to amazing facts about life on the International Space Station.

Blue Cape

Make your own one-of-a-kind cape and personalize it with felt stickers!

Explore Australia

Build a wooden kangaroo that hops when you press it down. Craft a colorful coral reef art piece, and explore the undersea wonders of the Great Barrier Reef. Get inspired by the Tjanpi Desert Weavers and make your own fiber dog sculpture. Play kolap, a strategy game from the tropical island of Mer. Then whip up a batch up Anzac biscuits — you're going to need a snack after all that kolap competition!

Enrichment for Grades K-2 (5-Pack)

Eggsperiments

Conduct a series of egg-themed experiments that show physics, chemistry, and biology in action. Color eggs using chemical reactions, create sparkly eggshells through crystallization, and more! Eggsplore the scientific method in a hands-on way, all while seeing bubbly, fizzy, bouncy, sparkly science at work! 
Eggs not included.

Enrichment for Grades 3-8 (5-Pack)

Safari

Embark on a wild safari expedition with 3 engaging activities and a bonus magazine.

Red Cape

Speedy Race Cars

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

Little Artist

Encourage little artists with a color-block painting project, abstract bead sculpture, and a personalized art smock.

Camping

Build a glowing campfire, cook up tasty treats, and make a beary fun backpack! 
Through Koala Camp, supplement & extend Camping with FREE content, video and additional DIY activities. We are aiming to provide ~4 hours of content & activities per day - though your camper might go faster or slower!

Kellan Plushie

Everyone's favorite koala makes the perfect cuddly companion for a Koala Crate kid — whether they're learning about science, making amazing art, or having a pretend-play adventure. 
This Kellan Plushie comes as a finished product, not a DIY building kit.

Robot Sewable Circuit

Explore wearable technology, conductivity, and the science of sewable circuits! Sew up a soft, flexible circuit using conductive thread, add LEDs, then craft a robot keychain whose eyes light up when you touch its hand to its belly. Ready to glow?

Spark scientific curiosity with DIY projects that make learning about STEM fun for kids! We've developed easy-to-follow experiments that introduce kids to biology, chemistry and tons of other scientific topics.

KiwiCo, Inc.

STEM

Art & Creativity

Play & Learn

Cooking & Baking

Nature & Adventure

Holiday & Events

DIY lists

DIY videos

Get hands-on projects, delivered!

Top categories

Get hands-on projects, delivered!

Top categoriesBurst graphic

Top categories