A piggy bank (sometimes a penny bank or money box) is the traditional name for a coin container commonly used by children. The money storage tank is called "static tank" by collectors, which is contrary to the "mechanical tank" popular in the early 20th century. They are also often used for promotional purposes. The use of the name "piggy bank" has been widely recognized as the shape of a "pig", and many financial services companies use it as a logo for their savings products.

The piggy bank is usually made of ceramics or porcelain. They are often painted and used as teaching tools to teach children the basics of thrift and thrift; money is easy to insert. Many piggy banks have a rubber stop at the bottom. Others are made of vinyl and have a detachable nose for easy coin casting. Some have integrated electronic systems to calculate the amount of money deposited. Some of the bins have no openings other than the slot used to insert coins, which can lead to smashing the bins with a hammer or other means to get money in them.

Pygg is a kind of orange clay, which was usually used as a cheap pot material in the middle ages. It is called pygg pot or jar pot. Whether pygg is just a dialect variant of pig is controversial. By the 18th century, the term "pig can" had evolved into "pig can". As pottery was replaced by other materials (such as glass, gypsum and plastic), the name gradually began to refer specifically to the shape of the embankment, rather than the shape used to make the embankment.

The oldest money box discovery in the west can be traced back to the second century BC Greek colony Priene, Asia Minor. It is characterized by the shape of a miniature Greek temple, with gaps in the mountain temple. Pompeii and hekulanim also dug up various forms of money boxes, which often appeared in provincial sites in the late ancient times, especially in Rome, England and along the Rhine River.

Java and Indonesian term C? l？ Ngan (literally "the image of a boar," but in the past it used to mean both "savings" and "piggy bank") is also used in domestic banks. The etymology of the word is vague, but it's obvious in the 15th century magapahit piggy bank. In a village in Indonesia's East Java province, a possible site of the ancient capital of the magapahite Empire, several boar shaped piggy banks were found in large archaeological sites around truvalan. These may be the source of the Javanese Indonesian word for a savings or money bank. Another Javanese independent synonym for savings is tabungan, which derives from the word "tube" or "cylinder.". This is caused by another method of making coin containers, which is made of a part of closed bamboo section with a slit for inserting coins. An important specimen of the mayapahit piggy bank is stored in the National Museum of Indonesia. It was rebuilt because it was found that the big piggy bank had been broken. It has been found that there are many shapes of the coins container of the terracotta warriors and horses, including pipes, cans and boxes, each with a slot for inserting coins.

The general purpose of the piggy bank is to store change in a simple way. Modern money storage tanks are not only limited to the shape of pigs, but also can have various shapes, sizes and colors. They are most commonly used in temples and churches because they are locked money boxes with narrow openings for cash or coins. When the collected money is counted and recorded, the box is opened regularly through the plug below.