Gratitude Crystals are items from The Legend of Zelda: Skyward Sword. These crystals are physical manifestations of peoples' feelings of gratitude; there are 80 of them in all, and they may be gained after completing various side-quests for denizens of Skyloft. Gratitude Crystals may be exchanged with Batreaux for several rewards. Humorously, Kukiel refers to them as "grabitude crackles."