The Yellow Balloon Mushroom is a harvestable that can be found in the Frontier. It can be found from various sources and locations throughout the Frontier including but not limited to:
- A guaranteed drop from a Gold Ogre.
- An uncommon drop from a Yellowman.
- Being harvested from Ancient Forest, Celestial Field, Farm Fortress, Frigid Waste (PvP), Greenhorn Grove, Hoodlum Falls, The Deep Forest, and The Town of Right and Wrong.
In appearance, the Yellow Balloon Mushroom is a mushroom taking on the appearance of a yellow balloon, with its beige stem acting as the string and its yellow cap acting as the 'balloon' itself. Players can exchange 15 Yellow and/or Purple Balloon Mushrooms for a Pipe Rifle and 20 Bullets during the Arnold Slime Quest. Players can also exchange 5 Yellow Balloon Mushrooms for 7,500 gold during the Slayer's Tasks. If the player has no purpose for the Yellow Balloon Mushroom, it can be sold for 500 gold.