Okay, so here's the deal. I held off suggesting this, because I figured someone would find an official thing at some point, but it appears that an official thing has not been found.
I am the founder and High Priest of the Bread of Life Secular Church. (You can find us on facebook!) We are tiny and small and informal, but the Church has tenets, and I have three priests under me, and one of them has already performed a wedding, so I figure I'm due to get cantrips any time now.
My schedule this year is VERY busy, but there are a few chunks of time here and there that I could meet up. So, if you want, and don't mind a very informally dressed cleric, I can bless your marriage. I can also technically officiate your marriage, officially, but the paperwork with that can get dicey. (Diecey! geddit?)
My Church is about sharing food and not being a jerk, mostly. It's open to all people, including those who already practice other religions. As long as you're into eating food and not being a jerk. I guess just say something here, and if there's interest, we can figure out the best way to get in touch.