1) Beedle’s Shop Ship
Find him in the SW quadrant and hand over 500 rupees.
2) Zauz’s Island
Use a Cucco to hover to the chest just right of Zauz’s house.
3) Isle of Gust
Kill all the miniblins in the pit to reveal a chest.
4) Postbox
Salvatore will send you one after trying his cannon minigame.
5) Isle of Ember, Astrid’s House
Talk to Astrid after beating the Temple of Wind.
6) Molida Island
Dig the obvious spot just past the sun key door. The chest is on the ledge.
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7) Temple of Courage
On floor B1, aim an arrow orb north to hit the eye crest and reveal a chest.
8) Mercay Island
There’s a chest on Freedle’s isle.
9) Bannan Island, Old Wayfarer’s Hut
Pass on Jolene’s letter to Joanne.
10) Temple of the Ocean King
Defeat all of the Wizzrobes on floor B9 to reveal a chest.