There are a few side quests in Zelda: Echoes of Wisdom that require you to carry an object from point A to point B. One is in Eldin Volcano ("The Flames of Fortune"), and the other is on Holy Mount Lanayru ("Snowball Magic"). Unlike the Eldin side quest, "Snowball Magic" doesn't have a time limit, but you'll still need to carry the object to its destination without breaking it. The reward for the side quest is necessary to get if you're planning on having two rows of heart containers in Echoes of Wisdom.