Shroom Bloom is a Gaddget in Mario Party Advance. It is unlocked by clearing the Bestest Buds quest.
Description[]
The Gaddget involves the player producing their own mushrooms. The top-left corner has a meter that indicates how moisturized the mushroom is, and the player has to keep the moisture level between the four white dots. The mushroom grows increasingly while being squirted until it becomes a perfect mushroom. However, another effect of this is that the screen becomes wet. Once the mushroom is done growing, it is plucked away with tweezers, the meter becomes normal, and drops are no longer shown onscreen.