Everyone: A camp chair, clothing appropriate for the weather and shoes appropriate for hiking, sunscreen, insect repellent, a flashlight, bottled water or other drinks, plates, cups, and eating utensils. 

Campers: A tent, sleeping bag / bedding, personal hygiene products, towel, washcloth, shampoo, soap or body wash, changes of clothes, etc.  Lunch that you can prepare at your campsite and snacks (Breakfast and lunch are provided if you purchase a meal plan).

Tent decorations: You might consider decorating your tent space. This can include banners, flags, solar lights, or other items of personal interest or that relate to groups / communities that you belong to.

Optional: Glow sticks, extra snacks, car chargers and backup battery packs for your phones and electronic devices, notebook and pen to take notes, and a drum or other percussion instrument for the drum circle.

Items for the Community Altar:  Items of personal significance to go on the community altar. 

Other:  Ritual garb is welcome.  Consider a toga or costume to wear at the social / dance.  Think nature deities and nature spirits - Faeries, Nymphs, Satyrs, Green Man, and so on.