This video featuring Neil Price of Uppsala University that briefly addresses different aspects of viking religion is produced by Grimfrost, a Swedish company that makes all kinds of viking-ish gear, of both replica and modern-styled varieties. They seem like they’re on the up-and-up as far as “authenticity” (however you interpret that) goes, and even have Dr. Crawford’s seal of approval.
Check it out, if you’ve got some minutes to spare: