Original DIY designs from truss bridges to rubber band race cars, helicopters and rockets.
Explore 30 cool projects or browse by category.
A high-performing rubber band-powered car design. Big wheels provide traction and distance.
Suggested ages: 9+
Powered by rubber bands, this helicopter is easy to build and can fly straight up over 20ft.
Suggested ages: 7+
Simple to build with a big payoff, the slingshot car zips across the floor surprisingly fast.
Build a simply hydraulic mechanism, then customize its function however you'd like.
This rubber band-powered propeller car design is optimized for speed and distance.
Stronger than a square-shaped bridge, this truss bridge design will hold extremely heavy loads.
Simple and cheap to build, yet slingshot straw rockets can be launched well over 75ft.
Experiment with the science of momentum, potential energy, and conservation of energy.
Suggested ages: 5+
Create a hydraulic-powered lift, then design and build a truss bridge to activate.
Suggested ages: 11+
A classic mousetrap car design. Create the car, then use math to predict the distance it will go.
A kid favorite, the craft stick bow and arrow is fun to build and exciting to play with.
Engineer a hydraulic-powered box project for kids to store their small possessions.
This rubber band-powered catapult is a fun way to show what a class 3 lever is.
Truss supports and rubber band power enable this durable slingshot design to shoot far.
This push-powered catapult is an exciting way to teach the concept of a class 1 lever.
Create a custom hydraulic-powered robot project, then compete in a judo-like competition.
A quirky project, the pull-string spinner shows kids the concept of angular momentum.
Build a strong tower comprised of trusses, then test its strength and stability.
Use the science of aerodynamics to create a car that can gently glide to the floor.
This simple propeller-powered invention zips along a taut string at remarkable speeds.
Inspired by the 'viking catapult,' this design is simple yet strong due to the pyramid structure.
Better than the egg drop challenge: Engineer a car that keeps an egg safe in a collision.
A simpler catapult that doesn't require hot glue, yet it can fire far and get kids excited.
Suggested ages: +7
A kid favorite, the trigger launcher is easy to customize and a blast to use.
Create a lightweight car that's easy to build and powered by the wind.
Experiment with the science of pneumatics (air pressure-power) to create a powered lift.
Engineer a mechanical hand, then test different designs until it can pick up anything.
Transform basic geometric shapes into more complex 3-dimensional forms.
Explore our Etsy shop of original robot kits made from laser cut wood and simple electronics.
Keep these 3 quick and easy engineering activities on hand to fill out extra class time.