Give these gyros and tops a spin and explore the forces of rotational momentum and gyroscopic stability. Give Euler's Disk a spin and observe the hypnotic display of light and continually changing sound. The Squiggle Ball has amazing abilities to navigate out of corners, even simple mazes! The Revolution Top is a great demonstration of magnetic levitation, improved by the addition of flashing LED's. Give Top Secret a spin and watch it move for hours without stopping.