Build a robotic face that can make facial expressions using simple machines.
Create a circuit that has no metal wires and uses at least three different conductors.
Build a crane that uses simple machines and mechanical advantage to move heavy objects.
Build a fast, stable boat that can move through the water for at least 1 foot using a hand-powered propeller.
Build an air-powered spinning machine inspired by Boeing CST-100 Starliner.
Make a ball and socket joint that mimics the movement of a human hip or shoulder.
Build a mighty machine that jumps up, sideways, or flips over. The whole structure should jump into the air.