Giant Mushroom

The Giant Mushroom is a power-up found in Super Mario 64 DS. It appears similar to a regular mushroom in the Super Mario Bros. series, though functions as a Mega Mushroom. It is a recolor of the 1-Up sprite. The Giant Mushroom is most often found in boxes.

When collected, the player grows in size and can destroy several enemies and objects. Each object destroyed increases a counter. When the counter reaches 8, the player is awarded with a 1-up for each object destroyed afterwards.

Mini Mushroom
Found in some personalized copies of Super Mario 64 DS is a blue variant of the Giant Mushroom, similar to the Mini Mushroom in the Super Mario Bros series. It makes the player smaller when collected. It is sometimes used to find new areas, though these are uncommon, and the Mini Mushroom is seemingly useless. Why it is added is unclear.