Leaf pile

Leaf piles are elements commonly found in autumn-themed stages within the Mario and Donkey Kong franchises. Their most common role is to release an item when interacted with in a certain way.

Super Mario Galaxy
In Super Mario Galaxy, leaf piles appear on the Gold Leaf Galaxy's starting planet. When Mario or Luigi spins on a leaf pile, it gives three Star Bits or a single coin.

Mario Kart series
Leaf piles appear in the Mario Kart Wii course Maple Treeway, in its remakes in Mario Kart 7, Mario Kart Tour and Mario Kart 8 Deluxe, and in the autumn variation of the Mario Kart 8 and Mario Kart 8 Deluxe course Animal Crossing. They act similarly to crates, disappearing when hit by an item or racer and dispensing Bananas, coins, Mushrooms, and, occasionally, Super Stars. Unlike crates, however, leaf piles do not slow racers down when they hit them. They reappear a short amount of time after being hit. In time trials, they remain in their usual locations but do not dispense any items.

Donkey Kong Country: Tropical Freeze
Large leaf piles appear in the Donkey Kong Country: Tropical Freeze level Horn Top Hop. The Kongs can stand and walk on top of them as on ground, but rolling into one causes it to scatter, which most commonly releases an item such as a banana or a Banana Coin. One pile in particular hides a horn that releases a Pointy Tucks and a Puzzle Piece in an alternative fashion when uncovered.