The small stool on top of the pizza is used to support the pizza take-out box. The inventor of this small table is an American woman named Carmela Vitale. In 1983, at the age of 46, she discovered that pizza boxes often had toppings stuck all over the place, so she invented this small table. It is mostly found in take-out pizza boxes. Without this small table for support, the pizza box would be squeezed during transportation, and the freshly baked pizza toppings would easily stick to the box, especially the sticky cheese, and the pizza received by the guests would be a mess. Later, this design was patented and named the pizza savior. Later, due to its practicality, it spread all over the world and evolved into different forms.