These tessellations were considered by 19th-century inventor David Brewster in the design of kaleidoscopes. Algae can drape reefs in kaleidoscopes of colours and shapes. Kaleidoscopes is a series of instrumental music albums by Zambian born Canadian composer Hennie Bekker. The kaleidoscopes consist of panels of clear and reflective acrylic material. Most kaleidoscopes are mass-produced from inexpensive materials, and intended as children's toys. In 2017 the EP "Kaleidoscopes" was released. Interactive exhibit modules enabled visitors to better understand and appreciate how kaleidoscopes function. These are used in applications such as games, bubble level simulations, and kaleidoscopes. An estimated two hundred thousand kaleidoscopes sold in London and Paris in just three months. Reflection groups have deep relations with kaleidoscopes, as discussed in . Carpenter's company would keep on selling kaleidoscopes for 60 years.