Egg

An egg is the organic vessel containing the zygote in which an embryo develops until it can survive on its own, at which point the animal hatches.

As a Collectible
Yoshi's Egg (Yoshi)

As a Projectile
Egg (WarioWare, Inc.: Mega Microgames)

As Transportation
Yoshi's Egg (New Super Mario Bros. Wii, Super Mario Galaxy 2, Super Mario Maker, Super Mario Maker 2, Super Mario Odyssey, Super Mario Sunshine, Super Mario World)

As a Weapon
Yoshi's Egg (Super Mario World 2: Yoshi's Island, Yoshi's Crafted World, Yoshi's Island DS, Yoshi's New Island, Yoshi's Story, Yoshi Touch & Go)