Kaleidoscopes look a little bit like a small telescope that you can hold in your hands. One end has a hole you can look into. The other end has translucent paper or other material that lets light in. Inside the kaleidoscope, there are mirrors arranged in a circle, as well as a variety of colourful objects, like beads, pebbles or small pieces of glass, that are free to move around. As you look through the viewer and rotate the outside of the kaleidoscope, the mirrors reflect the movement of the small objects to create fascinating visual images that change with each movement.