Create something awesome with these DIY activities for 9-12 year olds. From hands-on crafts to science experiments, we have hundreds of easy-to-follow ideas!

DIY Activities for 9-12 Year Olds | KiwiCo

DIYs for ages 9-12

200 Quick & easy experiments

Crazy chemistry experiments

Electronics & Robotics

Engineering & Building

Motion & Mechanics

Anatomy & Biology

Toy & game design

Math made fun

STEM Activities

750+ Quick & easy craft ideas

Recycled creations

Fun & functional projects

Jewelry & Fashion design

Handmade cards & gifts

Art & Creativity

Fun & Games

Hands-on learning

Sound & Music

Pretend play

Play & Learn

Kitchen science

Fun with food

Sweet & salty snacks

Treats & Dessert

Cooking for kids

Cooking & Baking

Animals & Bugs

Plants & Rocks

Seasons & Weather

Radical rainbows

Outdoor Adventures

Space exploration

Nature & Adventure

Birthday fun

Pi Day

Earth Day

Easter

Holiday & Events

Holiday

Grades K-2

Grades 3-5

Science & Engineering 

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Holiday Gifts

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Motorized Christmas Train Advent Calendar

Build a working train that delivers 12 days of fun!

9-12

Pretend Play

STEM Toys For 5 Year Olds 

STEM Toys For 6 Year Olds 

STEM Toys for 7 Year Olds 

STEM Toys for 8 Year Olds 

Valentine's

New Arrivals

Surprise Prize Vending Machine

Build a vending machine that actually works! Load it up with the included mini erasers, and turn the handle to grab your prize!

Show S&G

Schools and Groups

Outdoor toys for kids 

Outdoor

Easter Gifts for Kids

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Labs 9-12

$10 off first crate

Show club PDP treatment

Flex & Fly Plane Launcher

Bend, launch, and glide into the physics of flight! Build a launch lever that will send planes soaring, then put together a spring-powered runway for high-speed takeoff.

Mathematics

DIY Gifts

Grades 6-8

Building Toy Kit Gifts 

Product Finder

Geography & Culture

Labs 6-9

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Christmas Candle Carousel

KiwiCo Packs

Electronics

School Break Activities 

Advent Calendar Bundle (2-Pack)

Count down to Christmas with this 2-pack bundle, each with 24 days of presents!

Club Exclusive (hide individual purchase option)

Robotics Engineering

Engineering & Technology_

Start with this Crate

Delivery Bot

Build a radio-controlled robot that delivers!

Make-It-Move Holiday Bundle

Bring the holidays to life with two projects filled with mechanical motion!

Cooking

Chemistry

Non-Toy Gifts

Non-Toys

Active

Big Gifts

Fan Favorite Bundles

Science of Cooking Bundle (3-Pack)

Grab your apron and gather your ingredients — we're about to get cooking! While cooking up some delicious bakes, you'll learn the science behind ice crystals, yeast, and more. 

Science of Cooking Bundle includes Science of Cooking: Ice Cream, Science of Cooking: Bread & Butter, and Science of Cooking: Mini Cakes — at a special bundled discount price. All crates are delivered together, so you can get cooking right away!

Art & Design_

Travel Packs

Craft Kits for Kids

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$5 off first crate

Pixel Art Lightbox

Poke pegs into the screen and watch them glow with luminous color! Make brilliant patterns using 12 durable design templates, or create your own one-of-a-kind art.

Mechanical Engineering

Summer Camp

Engineering & Technology

Marble Roller Coaster

Become a thrill engineer and build twisty, turny roller coasters. Construct a mechanical Ferris wheel that lifts marbles to the top. Ready to build a rad ride of your own?

Color and Light

Light Play Lab

Explore light and color with a super shadow show! Set up a canvas creen and use the projector to make shadows with your hands, body, and solid shapes.

Water Pump Play Set

Pump and spray and slide and play! This play set comes ready for all kinds of splashy, creative fun. Suck up water with kid-sized pump, stick-on water slides and a tippy cup, and use the nozzle to squirt and spray. Then, pack everything away in the storage bag for backyard, bathtime, or poolside play another day.

Desktop Pinball

Roller Ramp Arcade Game

Lots of Bots! Robotics Bundle (3-Pack)

Get ready to rock out with robotics — with this bundle pack of our most beloved ’bots! Play with mechanical motion as you engineer a walking robot, get hands-on with switches as you create and customize a slithering snake robot, and discover domino design with a domino robot you build yourself.

Play Fort Set

Build, play, and imagine with the Play Fort Set!

Labs 12-16

Table Tennis Robot

Ace your serve with a table tennis robot you build yourself!

STEM Holiday Bundle (3-Pack)

Animals & Nature

Halloween

Educational Dinosaur Toys for Kids

Imaginative Toys 

Educational Dinosaur Toys 

Animal Lovers

Grades Pre-K

Gifts under $20

Chomping Mechanical Dinosaur Costume

Get your rawr on — with a big green mechanical dinosaur costume, you build yourself! This costume crate contains everything you need to craft a spiky T. rex head, engineer a fierce felt jaw that snaps shut with the pull of a string, then add a set of matching dino claws to complete the look.

Mega Hand

Build a giant jointed hand that responds to your gestures!

Life & Environmental Sciences

Professions 

Gifts For Smart Kids

Science Gifts for Boys and Girls 

Life & Environmental Sciences_

EPIC

Kindergarten

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Professions in Training

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.

Summer New Arrivals

Sensory Toys

Baby & Toddler Store Exclusive

Social Emotional Learning

Spring Projects

Wooden Toys

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Early Childhood

Water and Sand Sensory Table

Scoop and spray and learn and play! This sensory play table comes ready for all kinds of splashy, sandy, creative fun.

Unusual Gifts For Kids

Award Winning Toys 

Racing

Boys & Girls Clubs

Unique Christmas Gifts for Kids

Create & Innovate

Pinball Machine

Design the board, launch, and play, all while discovering pinball game physics! 
 
Everything needed, from materials to illustrated directions, is included, along with imagine!, a bonus play & learn magazine for kids.

DIY Science Kits

Maker Space

Christmas Gifts for Tweens

Overstock

Easter Sale

Art & Design

Physical Science

Animal Bath Bombs

Learn about acid-base reactions and the science of molecules while mixing up a colorful chemical concoction, then press the mixture into bath-bomb shape. Drop your finished bath bombs into water to see fizzy chemical reactions — in action! 
One project can make 3-6 unique bath bombs.

Science & Creativity

Motorized Spin Art

Power up your own spin art studio and get creative!

Stocking Stuffers

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!

Cozy Glowing Fireplace

Build a festive fireplace that crackles and pops! Use LED lights and tinsel to create a fiery glow and build a circuit that allows it to flicker, crackle, and snap just like the real thing.

Montessori Toys for 2 Year Olds 

Sensory Play Lightbox

Light up early math learning with museum-inspired sensory play! Turn on the lightbox and watch the geometric shapes glow, and mix and match the pieces to see how they fit together.

Gross Motor Play

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.

Arts & Music

Silly Speaker

Engineer your own cute square speaker — and give it a goofy grin!

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