$25 to $50

Jumpstart your study of mechanical physics by learning all about simple machines and how they're used to make complex tasks easier to do. Through 2...

Get ready for out-of-this-world fun with Snap Circuits® Jr. Select! With over 130 projects to build, including a glow-in-the-dark flying saucer, ki...

Build unique robots that are powered by the sun — batteries not required! Using a compact solar panel, these cool little bots harness energy from t...

Make STEM learning fun with SolarBots: Cosmic Explorers! Assemble 5 solar-powered robots with the easy and colorful building system and step-by-ste...

How cool is it that the mainspring stores energy, then converts it to motion? Discover the physics of potential and kinetic energy and the inner wo...

Unleash your inner detective with Spy Labs' Forensic Investigation Kit. Uncover hidden secrets with UV light, fingerprint powder, pH test strips, a...

Create a secret alarm with Spy Labs Invisible Tripwire! Turn on the LED beams, line them up, and make an invisible barrier. If someone crosses it, ...

If you're raising a future Sherlock Holmes, your young detective needs all the tools of the trade. Help them crack the case on any mystery with thi...

If you're raising a future James Bond, your young secret agent needs the high-tech help of a location tracker. Hide the transmitter with a valuable...

Stay connected with your fellow secret agents with Spy Labs: Spy Walkie-Talkies. With a range of up to 1.5 mi/3 km unobstructed and 0.5 mi/1 km wit...

Discover the ultimate spy kit with Spy Labs: Ultimate Spy Sleuth Master of Surveillance! Use night vision goggles to see clearly in the dark with f...

Unleash your child's inner engineer with the Structural Engineering: Bridges set from Thames & Kosmos! This 287-piece wonderland lets curious m...

Let the treasure hunt begin with the Thames & Kosmos Metal Detector! Designed for explorers of all ages, this lightweight detector finds metal ...

Unlock microscopic wonders with the Thames & Kosmos Microscope! View prepared slides or prepare your own with the 45-piece accessory set. Use t...

Turn your bedroom into your very own planetarium theater! Illuminate a darkened room by casting projections of the stars in the night sky and space...

Marvel at the wonders of the universe with this mesmerizing electric light show. The plasma ball creates a fascinating display of glowing electric ...

Kids who love to experiment can hone their problem-solving and critical thinking skills with this set of over 20 experiments! It's a great gift tha...

Young scientists can dig up some serious fun with The Young Scientist Club Extreme Fossil Dig! Resembling a real archaeological excavation, this se...

If your tween or teen has a fascination with all things steampunk - or trains in general - then this kit is for them! Young engineers put on their ...

Construct your air-powered robotic hand that fits like a glove and prepare to blast off! This amazing engineering project uses pressurized air and ...

Get ready for a jaw-dropping adventure like no other with the VR Shark Lab Kit! Dive into the world of these incredible creatures with the 40-page ...

Learning about the planets in our Solar System has never been this fun! Imagine flying through space as we discover black holes, rockets, satellite...

The wind is one of the most promising sources of clean, renewable energy available today. With this kit, you can assemble a realistic wind turbine...

The power of wind makes them go - and you'll have fun building 6 awesome bots that move without any batteries at all. Easy, snap-together assembly ...