$25 to $50

Race against your opponents, building towers with 32 interlocking shapes - it looks simple, but the challenges are CRAZY! High-energy games, from n...

Build your very own vending machine! With this engineering kit, you build a toy vending machine that sorts coins, dispenses candy or other small pr...

Caution, road work ahead! Use the five tough excavating tools to unearth seven trucks buried in one massive dump truck. Find the crane, bulldozer, ...

Go on an excavation journey as you chisel and dig to hatch baby dinos from their glow-in-the-dark eggs. Get things started by soaking one of eight ...

Kick your creativity into gear! Easily connect 16 cogs and gears to create a mechanical display like you've never seen before. Six larger gears hav...

See them erupt with excitement building a realistic volcano scene. This giant cardboard and plaster model is classic earth science learning at its ...

Create multiple tracks and see their faces light up watching rattling marbles navigate their way through each magical maze. Large multi-colored pie...

The store is open! Time to play cashier and customer with this two-sided register that guides your littles through talking and sound functions. A w...

Never too young to be a visionary. Create even more robots with Roboflex Plus! The new, flexible, extendable magnetic bars add an extra dimension t...

Stack hollow cubes to magically propel stainless steel marbles down a track for a truly mesmerizing experience! Eighteen special tracks grow wider ...

It's a race car. It's a light party. It's 360 degrees of full-on, stunt-performing action under your control. This remote-controlled 49 MHZ blue ca...

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