Object
Professional Grade Earplugs are earplugs that prevent Plankton from hearing Squidward's bad clarinet playing in the episode "Sweet and Sour Squid."
Description[]
The earplugs are light magenta in color and are shaped like cylinders. They expand to fill the user's ear and block out noise.
Role in episode[]
Plankton wears them after having his ears were nearly injured because of Squidward's bad music. He later loses them, which leads to Squidward's clarinet being destroyed and Plankton's arrest.