The Ball is a sphere, composed entirely of aluminum foil of various varieties. This site provides a great quantity of information about the ball; how it is made, how large it is now, etc. It will even give you hints should you wish to create one of your own. Google браузер для андроид
“Ball,” ibiblio catalog, accessed July 1, 2015, http://www.ibiblio.org/catalog/items/show/3564.