A favored fantasy of mine is to take a willing “victim” and place them in stocks for the remainder of a party
Next I would put them in a pitch black walk in closet blindfolded with soundproof headphones. Their soundtrack would be something without words, something airy to fit the mood.
While they are in the closet they would be faced away from the door giving anyone who dared to enter free reign over them. I would leave them there for hours. They would only have the touch and the smell of their aggressors to guide them. Then once I’ve known they have reached their every limit, their mind willing to give out on them I’d take them out to the middle of the floor having everyone surround them as they are ravished until they fall limp.