White Night Rods are collectables in Xenoblade Chronicles. They can be found in Colony 6. According to their description, Reyn was quick to name it and it is a white shiny metal rod.
※ During What is Courage?! only, if the party chooses to go to the Ether Mine instead of Satorl Marsh
Giving this collectable as a present from one player character to another will raise or lower the affinity between them as indicated by the following table: