The Legend of Zelda: Breath of the Wild/Dueling Peaks Tower

Main Quest

 * Seek Out Impa

The Priceless Maracas
The monsters who stole the maracas are three Blue Bokoblins. Bomb them from the hill just to the south of their camp. At least one will probably fall off the cliff from the knock back. When they are dead, the chest will unlock and you can get Hestu's Maracas from it.
 * Source: Hestu
 * Location: On the road southeast of the Pillars of Levia.
 * Reward: Hestu will upgrade your weapon, bow, or shield inventories in exchange for Korok Seeds.