Piggy bank

A piggy bank is used to collect coins. It is shaped like pig and comes in various colors and sizes. It is often used by parents to teach their children how to save money. It is not certain about why it is a called piggy bank and how it was started.
Some people say that "Piggy" was "Pygg" at first. Pygg is a clay that was used to make a bowl or vase to store salt or money.