Gerudo Token

This key item in The Legend of Zelda: Ocarina of Time allows Link to pass through Gerudo Fortress without being thrown in prison. Link obtains this from Naburoo's 2nd in Command after sneaking past all of the Gerudo Gaurds and freeing the 4 carpenters. This is vital when journeying to the Spirit Temple for the first time, as you need the card to have the gate opened.