There are a couple different companies that make SpongeBob Bandz, including the official Silly Bandz company. SpongeBob Silly Bandz rarely stay on store shelves for very long. I've heard from some stores that say they sell out the same day that they get a new shipment of SpongeBob Silly Bandz in stock. Above is a photo of some various SpongeBob Bandz. Companies that make SpongeBob Bandz include Silly Bandz, HER Direct, Ultimate Licensing, Inc., Novelty, Inc., and Bandit-Os. All the SpongeBob Bandz shapes are popular, but the most popular shape is of SpongeBob Squarepants himself. So are SpongeBob Squarepants Silly Bandz rare or not rare?