Marshmallow Ladder

Obtaining
It does not require an axe to be obtained, and so, will drop even if mined with bare hands but mining it with an axe is faster and recommended.

Usage
Marshmallow Ladders are used to descend up and down vertically. Marshmallow Ladders will safely cushion a player's fall and prevent fall damage before hitting the ground. The narrow top surface does not count though, as this will incur falling damage if one isn't careful.

Holding the sneak key will allow a player to grab the ladder, stopping them from going down automatically and decreases mining speed. Any mobs can climb ladders like a player can.