👉 Pennies are small, round, flat objects that are made of metal or plastic and have a thin, smooth surface. They are often used as currency in many countries, especially in Western Europe. The most common form of penny is the nickel (nickel), which is 1/25th the weight of a dime. Other commonly used pennies include the quarter, half dollar, and dollar. Pennies have been around for centuries and are one of the oldest forms of money