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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 Robot Engineer building kit box showing colorful robot and construction pieces
$42.99 - $42.99
$42.99
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$42.99

Kids First | Robot Engineer

in stock

$42.99 - $42.99
$42.99
$42.99 - $42.99
$42.99
Thames & Kosmos Make & Display Colorful Crystals kit display showing multiple crystal growing sets
$5.99 - $5.99
$5.99
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$5.99

Make & Display | Colorful Crystals Asmt

in stock

$5.99 - $5.99
$5.99
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$5.99
Thames & Kosmos GeckoBot 2.0 STEM educational kit packaging showing wall-climbing gecko robot
$34.99 - $34.99
$34.99
$34.99 - $34.99
$34.99

GeckoBot 2.0

Only 2 left!

$34.99 - $34.99
$34.99
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$34.99
Thames & Kosmos I Dig It Glow-in-the-Dark Dino Egg excavation kit with display box
$5.99 - $5.99
$5.99
$5.99 - $5.99
$5.99

I Dig It | Glow-in-the-Dark Dino Egg

in stock

$5.99 - $5.99
$5.99
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$5.99
Illuminated circular sand art display with orange sand patterns on white LED base
$12.99 - $12.99
$12.99
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$12.99

Lyells Sand Art LED

in stock

$12.99 - $12.99
$12.99
$12.99 - $12.99
$12.99
Thames & Kosmos Dusty Robot Vacuum Cleaner STEM kit packaging box showing robotic vacuum
$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99

Dusty | Robot Vacuum Cleaner

in stock

$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99
Complete microscope set with case showing all included accessories and components
$39.99 - $39.99
$39.99
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$39.99

Microscope Set w/Case

Only 1 left!

$39.99 - $39.99
$39.99
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$39.99
Black and purple dragon LEGO set with minifigure on gradient background
$57.64 - $57.64
$57.64
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$57.64

Disney | Maleficent Dragon

in stock

$57.64 - $57.64
$57.64
$57.64 - $57.64
$57.64
Spy Labs Ultimate Spy Sleuth surveillance kit with night vision goggles and motion detector
$39.99 - $39.99
$39.99
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$39.99

Spy Labs | Ultimate Spy Sleuth 1

Only 2 left!

$39.99 - $39.99
$39.99
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$39.99
Crystal Growing kits by 4M showing three color variants with packaging and display containers
$14.99 - $14.99
$14.99
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$14.99

Crystal Growing

Only 2 left!

$14.99 - $14.99
$14.99
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$14.99
Dr.STEM Toys rock and gem dig kit showing children excavating specimens outdoors
$27.99 - $27.99
$27.99
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$27.99

Discovery Rock & Gem Dig Set

Only 2 left!

$27.99 - $27.99
$27.99
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$27.99
Wonder Kids Sea Creatures Aquarium kit box with illustrated brine shrimp aquarium
$18.99 - $18.99
$18.99
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$18.99

Wow in the World | Sea Creatures Aquarium

Only 2 left!

$18.99 - $18.99
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$69.99 - $69.99
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$69.99

Botanicals | Pretty Pink Flower Bouquet

Only 1 left!

$69.99 - $69.99
$69.99
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$69.99
KidzLabs Build Your Own Binoculars kit with green safari-themed binoculars and packaging box
$19.99 - $19.99
$19.99
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$19.99

Kidzlabs | Build Your Own Binoculars

Only 1 left!

$19.99 - $19.99
$19.99
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$19.99
NOVA Obsidian Excavation Lab kit with black volcanic rock, gems, and excavation tools
$27.99 - $27.99
$27.99
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$27.99

Nova Obsidian Exc Lab

in stock

$27.99 - $27.99
$27.99
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$27.99
Thames & Kosmos V8 Race Car STEM kit box showing red motorized model car
$44.99 - $44.99
$44.99
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$44.99

V8 Race Car

in stock

$44.99 - $44.99
$44.99
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$44.99
Purple and blue LEGO Ninjago dragon with wings and golden claws on red background
$54.99 - $54.99
$54.99
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$54.99

Ninjago | Rontu the Master Dragon Rider

Only 1 left!

$54.99 - $54.99
$54.99
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$54.99
Box of Mag Rush The Oggs Launchables toy set with character illustrations on a white background
$27.99 - $27.99
$27.99
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$27.99

The Launchables | Oggs Characters

in stock

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$27.99
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$27.99
Mag Rush Launchables toy set with colorful 'Ergg' figures and packaging
$27.99 - $27.99
$27.99
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$27.99

The Launchables | Erggs Characters

in stock

$27.99 - $27.99
$27.99
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$27.99
LEGO Star Wars 327th Star Corps Clone Troopers Battle Pack set 75431 box
$49.99 - $49.99
$49.99
$49.99 - $49.99
$49.99

Star Wars | 327th Star Corps Clone Troopers Battle Pack

in stock

$49.99 - $49.99
$49.99
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$49.99
SolarFlower Sapphire Swirl STEM kit box showing blue spinning solar-powered flower
$27.99 - $27.99
$27.99
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$27.99

SolarFlower | Sapphire Swirl

in stock

$27.99 - $27.99
$27.99
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$27.99
Thames & Kosmos SolarFlower Ruby Ripple STEM kit package showing spinning robotic flower
$27.99 - $27.99
$27.99
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$27.99

SolarFlower | Ruby Ripple

in stock

$27.99 - $27.99
$27.99
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$27.99
WonderKids 100 Experiments That WOW science kit with box and contents displayed
$44.99 - $44.99
$44.99
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$44.99

Wow in the World | 100 Experiments That WOW!

in stock

$44.99 - $44.99
$44.99
$44.99 - $44.99
$44.99
Mag Rush Neo City Breakdown magnetic building tile set packaging with colorful design and toy illustration.
$79.99 - $79.99
$79.99
$79.99 - $79.99
$79.99

Neo City Knockdown

in stock

$79.99 - $79.99
$79.99
$79.99 - $79.99
$79.99