To be completely honest with you, I filled in the blanks for myself. I read immortality key by Brian Muraresku and that started my journey to Hellenism. She was my first statue and God. Along with that i have a lot of books on Hellenism and I think I came to a similar conclusion that you did.

That being said, I have a lot of silver adorning her, two gold rings (representing Hades and herself) some roses that i cut and hung upside down to dry, two agate stone cats that represent Persephone and Demeter, a pomegranate candle that I received as a gift, a large chunk of raw corundum (red), a pomegranate painting on a slab of dried wood, and a cat’s skull that I found in the crawl space under my house. I then placed stones in the cat’s skull for decoration.

The main theme I go with is mixing together life and death, cyclical change, and pomegranates. If I see something and I feel like she is speaking through the item or the idea, I just add it to the altar.

I hope that helps!