My connection with the divine has shifted over the years and I currently honor the Universe as a collective rather than the individual deities by Their names, so when I set up my altar space for rituals or meditation, the objects I place are as eclectic as I am (which is to say, very! )
While I don’t use depictions for the God and Goddess in Their unique forms, I know that one common way to symbolize the Goddess is with the Triple Moon Symbol: (two crescent moons around one full moon). This symbolizes Her in Her three aspects: Maiden, Mother, and Crone. Sometimes a pentacle () is placed within the full moon to symbolize all of the natural elements.
For more ideas, you might also broswe through the Triple Goddess Page- additional symbols for Her are explored there!
That’s awesome! I’m sure you’ll find the perfect representatives that suit your vision- wishing you all the best as you build your altars!
I don’t have representations of the God and Goddess on my altar as it doesn’t fit my belief system, but I do have a representation of Brigid (when my altar is setup…lol) both of the representations are things I’ve made myself.