Quiver

Holds your arrows. Usually holds 30, but can be upgraded (usually) to 40 and 50.

In Twilight Princess

 * Basic Quiver: When Link retrieves the Hero's Bow from within the Goron Mines after defeating the dungeon's miniboss, the wapon by default come with the basic quiver, an arrow bag that can hold up to 30 arrows. From this point on, arrows can be hybridized with bombs to create Bomb Arrows, or with the Hawkeye to enhance shooting precision. On the Wii the bow is used with a crosshair, to enhance shooting accuracy. The Gamecube usage of the bow/arrows is no different than Majora's Mask or Ocarina of Time, somewhat of a first-person shooter.
 * Quiver Upgrade 1