連結：披薩盒小白柱三十歲了
1983年，時年46歲的美國媽媽維塔莉（Carmela Vitale）發現披薩紙盒常把餡料黏成一團，於是製作出一張「小桌子」，放在披薩上面撐住盒蓋，以免紙盒蓋毀了披薩，她更將這個設計申請專利，命名為「披薩救星」（pizza saver）。不過她自己並未投資量產這項發明，她是否因此大賺一筆，外界也無從得知，1993年專利過期，維塔莉並未申請更新。
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A pizza saver is made of plastic and has three (sometimes four) legs. They are often white, and the common practice is to place one pizza saver in the center of the pizza before the box lid is closed for delivery. The pizza saver is not re-used and is typically discarded by the patron, although some people have found secondary uses for them such as egg holders when turned upside down.
In 1985, Carmela Vitale of Dix Hills, New York, was issued a patent for a plastic 3-legged tripod stool that would sit in the middle of the box and keep the top from sagging into pizza, cakes or other foods kept in a box. Vitale called her invention a “package saver” and used that term also as the title of her patent, but it has since been renamed the “pizza saver” since that has become its most common use. The patent (#4,498,586) was filed on February 10, 1983, and issued on February 12, 1985.
Variations on the device have since been invented by other people, such as a disposable plastic spatula whose handle holds the box top up; and a plastic tripod, like the design by Vitale, but with one of the legs serrated like a knife, making for easy cutting of stuck cheese and bread.
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小編評：真的長知識啦！！！（真的是冷知識耶～）