Larry's crown is a crown that only appears in the episode "Larry's Gym." It belongs to Larry the Lobster.
Larry's crown is a fairly large yellow crown. It also has blue jewels around the base of it.
Role in episode
This crown is seen after Larry and SpongeBob walk into a room of Larry's Gym. One of the fish announces Larry as the "King of the Gym" and Larry has a towel boy polish off his crown.
Later, when Larry has become weak and SpongeBob has become strong, Larry gives SpongeBob the crown, saying that he is basically the alpha male at the gym now.