All of the above have been great suggestions!
I've hosted a few where we did potluck on the food.
Not only did we get to share our selves physically but we got to sample each other's culinary talents as well!
The best was a party held by a couple who did the potluck thing then we held a vote towards the end of the evening for the best food dish brought.
The winners were treated to a 20min sensual massage graciously donated by an attending couple who were both professional massage therapists!
(No, I didn't win
)