SpongeBob SquarePants&reg; 2" Aquarium Ornaments, 7-Piece Set Includes all 7 officially licensed Nickelodeon 2" SpongeBob aquarium ornaments! (6" Pineapple House sold separately.) Bring the world of SpongeBob home and into your child's aquarium. Enjoy the magical world of Bikini Bottom while teaching your child about pets. Made of a durable resin that's safe for children & pets. Continue to add our other great SpongeBob aquarium ornaments & items.