[I’m sharing how I’ve known and interacted with Everyone, starting with the Aesir. The Vanir will be next, then the Rokkr, and then the category where I put those Who don’t seem to pick just one category.]
I mentioned in Baldur’s post that I have a depression [management] prayer set. My interaction with Nanna has been pretty much limited to this prayer set. I don’t have offerings, other prayers, a physical shrine / altar, or really anything else. I have a sparse tumblr tag for Her: Nanna. The prayer that welcomes Her as part of the depression prayer set is Her stanza of For Baldur and Nanna by Galina Krasskova (from Her nothernpaganims.org shrine).