SpongeBob and friends are USPS stamps: You can snail-mail any pineapple under the sea The “SpongeBob SquarePants” Forever Stamps.

The stamps are Forever Stamps, meaning they are not associated with a price and can be used forever. "SpongeBob SquarePants," created by Stephen Hillenburg, debuted in 1999.

A standout feature will be a “Phone Booth to the North Pole” - a vintage-style European phone booth placed near the site of Santa’s House during the holidays.