Recommendations:
1. Give the player the option to 'Ask' how to protect themself during the ceremony. Probably asking the spirits leads to a recommendation to ask the great spirit tree, who will either give you the answer or offer a hint to it.
2. Unlock a spooning position for sex by sleeping alongside a spirit the player is intimate with.
3. Have a chance for generic spirits to wear clothes, particularly the tribal outfit. Possibly with more colors so clothing can fashionably pair with the spirits' hues.