$25 to $50

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...

The GraviTrax PRO Vertical Expansion Set offers 33 additional elements to reach new heights with your track. Create dynamic marble runs with walls,...

Super sweet stunts! Build your own gumball machines and learn physics lessons in the process. A turn of a handle dispenses one gumball at a time ou...

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...

Bring your child's imagination to life with Peg Brite! This innovative lamp toy features a screen where kids can let their creativity shine and lig...

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...

Discover the interconnection of the natural world and learn why living things look and behave the way they do in a series of visually compelling in...

Experience mesmerizing magic in slow-mo with the Trestle Tracks Builder Set! Each set features hollow stacking cubes and perfectly flat tracks with...

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

The DIFFERENTIAL model kit is the mechanism without which you cannot turn a vehicle around. It demonstrates how the two drive wheels mounted on t...

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