What comes in sets of 8?

Several items come in sets of 8, including a standard octet of musical notes in an octave, the eight planets in our solar system, and a typical set of crayons or colored pencils. Additionally, many Board Games, like Chess, require a set of 8 pawns for each player. In sports, a standard volleyball team has 6 players on the court, but competitive leagues often have 8-player formats for specific competitions.