Get some of the girls to volunteer for a body painting segment. Invites some local artists to come and do some really great chalk art. Have the bunnies paint a tank top or t-shirt to be auctioned off for charity. Along with some from the local artists. Of course the best way to do that would be to have "walking art" and let the artists display their work for sale for charity while wearing them!!
There are some great performance artists, that do performance art where they paint a portrait of someone while the public is watching and who other to paint, but Hefner himself!!
You could also have some fun food made to look like art and some drinks that could look art deco!
Maybe even have a poet or two there reading poetry! I bet a noble laureate poet or two would be happy for an invitation!
They would have a section for masks as well. Have some photographers there to see how creative they can be in taking pictures and have the pictures voted on for a week before the next art show and show the favorites
PS, if they do this I want to come!
Any other suggestions anyone?