I assume that what is being proposed is a group ceremony.
I'd like to suggest that at the 2008 Nowhere event, each person's greeting was like a birth. They were welcomed into their new reality by loving arms and even spanked!
So, we could elaborate the idea on an individual level or a group level.
If it's a group ceremony, of course drums are essential. I love spiral dances, especially with larger numbers of people because when done properly, each person wold come face to face with their fellow citizens in a sacred way several times – all before their week has even begun. A great start.