I'm lucky to live an area where these type of parties happen regularly.
Make sure you have a low light "squish" room with lots of bedding or beanbags to lay around on the floor. With ambient music or even better, live ambient or medicine music by one fellow or a small music troupe.
Prohibiting shoes is helpful.
Having no talking upon the dance floor itself really helps it be a special container for ecstatic body movement, leaving mental/verbal aspects of reality to other spaces of the party.
Have plenty of water and herbal elixirs for hydration and natural stimulation to get the party going.
Large crystals borrowed from friends collections strewn across the room helps the vibe. Art, just any art 3D that people will donate to be kept in the space for the party.
Cacao served warm in large bowl with a ladle.
Body painters to cover everyone up in some art.[UV reactive bodypaint is extra nice.
Let some visual artists set up canvasses and live paint during the event.
Have arrangements to have dance or ritual performances during the music. Ritualists, fire dancers, water ceremonies, etc...
Inviting diviners like tarot readers or astrologists to have their own booth is fun to add.
Allowing people to sell their custom handmade jewelry around the party.
Breakfast is amazing way to end the party even if its just something clean and simple.
In the province of the mind what one believes to be true, either is true or becomes true within certain limits. These limits are to be found experimentally and experientially. When so found these limits turn out to be further beliefs to be transcended. In the province of the mind there are no limits. However, in the province of the body there are definite limits not to be transcended.-J.C. Lilly
The Spice must flow
Zat was Zen and dis is Dao.