A kaleidoscope consists of a mirror system to create symmetry, a body (to protect the mirrors) and an objective (which introduces color and texture into the image seen through the mirror system). The number of mirrors (as well at the angles at which they meet) may vary (two- and three-mirror systems are most common) and thousands of objective designs are possible. Optical Wonders kaleidoscopes use objectives consisting of
•two wheels mounted on a shaft, producing patterns that do not repeat (because the wheels turn independently), or
•a cylinder mounted on a shaft perpendicular to the mirrors, resulting in a three-dimensional image, or
•a chamber with tumbling glass and metal objects, producing the ultimate in randomness of image.