Build a satellite with a 6-inch square body that can deploy its own solar wings and antennae, and can fit inside a 9-inch diameter tube.
Build a plane that is powered by stored energy from a rubber band, balloon or spring. The plane should be able to fly straight for 5 feet.
Make a device that will carry a wave and record the wave’s movement.
Build an air-powered spinning machine inspired by Boeing CST-100 Starliner.