In the upper part of the dungeon there is a vertical area that has a vertical shaft at the top which a monkey can climb up to find a Magic Jam in a chest.
Inside a cave under a boulder in the first Baron Desert area. Use Pike Ball to flip the platforms as you land on them, or use Spitfire to hit them from the air. Other methods may work as well.
In a chest accessible from the room with the two eyes that control a single doorway between them, by making the left eye point up and the right one point down.
In the magic fountain room (chest accessible from the room with the two eyes that control a single doorway between them by making the left eye point left and the right eye point right) behind a statue breakable with a bubble.
In a cave in the section that resembles Lilac Fields in the upper left corner of the forest. Use the Monkey Bullet and Spitfire to make your way to the chest.
You can't miss the area that is partially submerged in water. Come back later with the Mermaid form ready and you'll find a Jam after passing through an underwater tunnel on the left.