Glass beads
Every man, when search in memory can find that the glass balls have been met during life. Mat, polished or rainbow glass ball was included in our childhood as top secrets. Gradual growing up our rainbow ball turned into a crystal ball, called ball divination, for which we have managed whole evenings to dream about our future. 
Ball is form which is the basic structural shape of all substances which surround us on The Earth and in The Space. Whether we start with atoms and end up with planets - everything has a spherical shape.
There is plenty of glass beads and balls in our homes to be founded to play with as game, or exhibits various decorative balls in display cases, but mostly, a lot of glass beads is hidden in many instruments and devices. Here are the technical balls that can be produced by different technologies. According to the method of production and their accuracy we divide beads and balls into pressed balls, barreled balls and a precise grinded balls and beads. Such beads and balls can be found for example in the perfume dispensers, non-return valve of washer or dishwasher. If you use for example paint spray, prior to using you have to shake-mix paint and it is done by shake mixing ball inside spray bottle. Similar shake-balls use patients who suffer from diabetes and need to inject insulin, each dose contains one shake- mixing beads. 
If you leave home, you get in touch in your everyday lives with glass beads and balls. Tiny glass beads are the foundation of reflective layers. When driving the car you can see many of glass beads as the road markings and reflective surfaces of traffic signs.
Every schoolboy who wrote or has written with ink pen also has to do something with glass beads. Firstly, for manufacturing of ink we use beads for milling of ink suspension, second, in each ink cartridge (Tintenpatrone) is molded glass ball, which when you insert a cartridge into the pen acts as a valve cap.
Decorative balls we can see in shop windows, where they often use colored glass beads. Crystal glass beads we can see at tables as decoration, very often at the wedding banquet. Some women may have noticed the glass beads in their perfume, which works as impressive decoration, but can be found in bath binary emulsions, which we want to mix prior to use.
On the playground you see kids having a marbles play whose professional appearance is also made of glass. We have a wide range of choice of so-called "raibow” which are requested by collectors and they are recommended by the Czech Marble Federation (www.kulicky.com) for its tournaments. 
Using of glass beads and balls in the industry is widespread. There is extensive use for manufacture of paints in the pearl mills, where milling by beads is required to reach requested suspension. In the food and pharmaceutical industries are beads and balls used to cut glass ball valves and bearings. 
We have glass beads even far below the surface. In the mines, each mine locomotive equipped with diesel engine has in the exhaust pipe sparks trap, which inclides planty of glass balls, which together with water to prevent sparks escaping and prevent explosion underground.
If you are tired by reading about use of glass beads, you can even use glass beads for massage the acupressure effects are very beneficial and enjoyable.