Ideas for Co-ed 12th Birthday?

I have a daughter whose 12th is coming up fast and when I asked what she wanted to do she said that she didn't know. She does want something with her five best friends, three of which are male. Her birthday is in the winter time and most of the ideas I have found that she has liked are outdoor pool parties, which we can not do. Any help will be appreciated. Thank you,

By Marissa