sponge

This emoji 🧽 represents a sponge. A sponge is a porous and elastic material, and it is often used for cleaning and other purposes in daily life. This emoji can be used to represent the sponge itself. For example, when referring to cleaning tools, 🧽 can be used to represent a sponge scourer; it can also represent cleaning behaviors or cleaning scenes related to sponges, etc.