When I was a child in far simpler times a kaleidoscope was a marvelous cardboard tube that you looked through to see amazing changing colourful patterns.  You looked through the eye hole at one end and turned a section at the other end and marveled at the changing patterns. I said it was a simpler time and these kaleidoscopes were very simple. A tube with mirrors at an angle and broken coloured glass in the section in the front that you could rotate. Kaleidoscope was also a word you did not want in a spelling test in the early years of school.