Sorry, there are no matches for what you chose. But, here are some activities that almost match.
2-Wheel Balloon Car
Make 2-wheeled, air-powered cars that jet across the floor. Race ‘em. Use ‘em to play games.
4-Wheel Balloon Car
Make 4-wheeled, air-powered cars that jet across the floor. Race ‘em. Use ‘em to play games.
Do the impossible! Pass a stick right through a balloon without popping it.
Pop a pom-pom up to the ceiling or across the room.
Slam two balloons into each other for a fight to the finish!
Make a mini robot that skitters around the room.
Build a Better Lunchbox
Keep a frozen treat from melting.
Make a string of glowing lights that you can dance with, read by, or wear.
Float a disk on a cushion of air and play games like air hockey.
Design and build a battery-operated alarm so small that it’s easy to hide.
Build an air-powered rocket that can hit a distant target.
Dance Pad Mania
Build a dance pad that lets you use your feet to sound a buzzer or flash a light.
Build a handheld device that uses a spinning, motor-driven arm to kick a Ping-Pong ball.
Make a balloon hover in one spot and move around when you create air currents.
Design and build a cushion system that can safely land an egg dropped onto the floor.
Build a blimp that uses balloon power to travel in a straight path across the room.
Build an airship called a blimp that travels in a straight path across the room.
Design and build an emergency shelter that can fit one person and is sturdy and easy to build.
The Sneaker Challenge
Design sneakers that do not harm the environment when created or thrown away.