Feng shui coins are a traditional Chinese symbol of wealth and prosperity. They are often used in feng shui practices to attract wealth and abundance into one's life. The coins are usually round with a square hole in the center, and they are tied together with a red ribbon or string. The number of coins used can vary, but the most commonly used numbers are three, six, or eight. The coins are usually placed in a specific area of the home or workspace, such as the wealth corner or the cash register area of a business.