In Norse mythology Vanaheim is the home of the Vanir. The Vanir were generally more benevolent gods of agriculture and nature, as opposed to the Aesir, who were warlike and passionate. The Vanir briefly warred with the Aesir, but quickly made peace. Freyr is a Vanir, as are Freya and Njord.
Dave Sim publishes his comic book Cerebus the Aardvark, as well as book-length collections from the comic, under the imprint Aardvark-Vanaheim.