Gah... Ok, I can't believe I left Demeter off the first list. I swear I didn't intentionally forget you. *bows deeply in shame*
Eros definitely slipped my mind though. And yeah, I called Artemis off the bat, but went with Hecate instead. Here, revised list with Demeter in the first spot! And Eros added to the additional minor deities list.
Available from the Big Twelve
Selected Additional Minor Deities:
Any of the Muses
Any of the Fates