Machines, rockets, Newton's cradles for teachers, students, parents etc. See Newton's Laws of Motion in action with Machines and Rockets.
The Zero Launcher launches 2 to 6 inch diameter non-toxic fog rings that sail up to fourteen feet. Easy to use, they are great stress busters and with practice you'll be able to create bigger and better rings.
Portable Van de Graaff Generator! - Touch the Fun Fly Stick to the foil and watch the foil instantly expand and float. One trick I like to do is turn it into a real Van der Graaff generator by replacing the cardboard tube with an empty soda can.
A classic Newton's cradle provides not only great amusement, but also illustrates basic Physics (Newton's Laws and conservation of energy & momentum). If one ball is pulled away and released, it falls and appears to come to a dead stop on hitting the other balls. The ball on the opposite side of the series appears to instantly acquire the speed of the first ball and swings in an arc that one would expect of the first ball.
