Storm King's Thunder
Gratitude of Zi
Zi is grateful for the assistance in defending Goldenfields. While she doesn't have the means to repay them in Goldenfields, she comes from a wealthy family in Baldur's Gate that owns several businesses in Waterdeep. She has given you a black pearl, and asked you to give it to Cauldar Marskyl of house Thann in Waterdeep, where he will give you a gift in exchange.
Caulder gave them a Heward's Handy Haversack, a Decanter of Endless Water, and a Potion of Frost Giant's Strength from an old wooden chest.