A light hat made of leather, useful for blocking out the sun.
The Beginner's Cap can be purchased from the Mysterious Man. It can also be found in a Treasure Chest in Amber Island's Cave which is found in the large room where to place the Removable Battery must be placed. This Treasure Chest is found high up and requires some careful platforming to reach. Lastly, it can also be found in chests in chests in the abandoned rooms of the Abandoned Ruins #2.