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Building & Science

Build it. Test it. Discover why.

Curiosity lives here. From hands-on building kits to mind-opening science experiments, this collection is made for thinkers, tinkerers, and big-question askers. Explore toys and tools that spark problem-solving, fuel creativity, and deliver those unforgettable “whoa!” moments. Because sometimes the best kind of play is figuring out how things work — one build, test, and breakthrough at a time.

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Thames & Kosmos I Dig It Rocks & Fossils excavation kit display box with mineral samples
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I Dig It | Rocks & Fossils Mini Excavation

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Thames & Kosmos Robot Engineer building kit box showing colorful robot and construction pieces
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$42.99

Kids First | Robot Engineer

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$42.99
Thames & Kosmos I Dig It Glow-in-the-Dark Dino Egg excavation kit with display box
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I Dig It | Glow-in-the-Dark Dino Egg

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Thames & Kosmos Make & Display Colorful Crystals kit display showing multiple crystal growing sets
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Make & Display | Colorful Crystals Asmt

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Thames & Kosmos GeckoBot 2.0 STEM educational kit packaging showing wall-climbing gecko robot
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GeckoBot 2.0

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$34.99
Thames & Kosmos Gross Gummy Candy Lab educational kit box showing worms and spiders
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Gummy Candy Lab (v2)

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Ooze Labs slime kit display with multiple containers showing different slime types
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Ooze Labs | Mix Your Own Slime Kits

Only 2 left!

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Dr.STEM Toys rock and gem dig kit showing children excavating specimens outdoors
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Discovery Rock & Gem Dig Set

Only 2 left!

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Wonder Kids Sea Creatures Aquarium kit box with illustrated brine shrimp aquarium
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Wow in the World | Sea Creatures Aquarium

Only 2 left!

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Thames & Kosmos Rainbow Gummy Candy Lab kit box showing colorful unicorn and rainbow gummies
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Candy Lab | Rainbow Gummy

Only 2 left!

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Red and gray toy toolbox with various plastic tools including hammer, wrench, and screwdriver
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My First Toolbox

Only 1 left!

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Thames & Kosmos V8 Race Car STEM kit box showing red motorized model car
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V8 Race Car

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Purple and blue LEGO Ninjago dragon with wings and golden claws on red background
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Ninjago | Rontu the Master Dragon Rider

Only 1 left!

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Box of Mag Rush The Oggs Launchables toy set with character illustrations on a white background
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The Launchables | Oggs Characters

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Mag Rush Launchables toy set with colorful 'Ergg' figures and packaging
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The Launchables | Erggs Characters

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LEGO Star Wars 327th Star Corps Clone Troopers Battle Pack set 75431 box
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Star Wars | 327th Star Corps Clone Troopers Battle Pack

in stock

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$49.99
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$49.99
Thames & Kosmos Dusty Robot Vacuum Cleaner STEM kit packaging box showing robotic vacuum
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Dusty | Robot Vacuum Cleaner

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SolarFlower Sapphire Swirl STEM kit box showing blue spinning solar-powered flower
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SolarFlower | Sapphire Swirl

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Thames & Kosmos SolarFlower Ruby Ripple STEM kit package showing spinning robotic flower
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SolarFlower | Ruby Ripple

in stock

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WonderKids 100 Experiments That WOW science kit with box and contents displayed
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Wow in the World | 100 Experiments That WOW!

in stock

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Mag Rush Neo City Breakdown magnetic building tile set packaging with colorful design and toy illustration.
$79.99 - $79.99
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Neo City Knockdown

in stock

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$79.99
Kidzlabs Egyptian Tomb Dig & Play Game kit with box and all included components displayed
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Kidzlabs | Egyptian Tomb Dig & Play Game

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KidzLabs Buzz Wire Making Kit showing blue base with wire formations and packaging
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Kidzlabs | Buzz Wire Making Kit

in stock

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Klutz STEAM Lab DIY Rainbow Catcher kit box showing optical experiments and included materials
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DIY Rainbow Catcher

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