Kelp Shake Building
The Kelp Shake-Building is a green building where, KelpShake was sold. It has the ability to multiply and was spread all across Bikini Bottom. It only had one appearance. It appeared in Best Frenemies. Despite the fact that it blocked traffic by spawning in the middle of a road, legal action was not made until it was later shut down because the Kelp Shake was very toxic. Even though it is very small, it has many rooms. It is unknown if it will ever re-appear.
It looks like a KelpShake, but made out of metal. It has a double front door with windows on it. The building has several more circular windows that seem to be placed at random.