Sweet Sixteen

My bithday is in about 2 months, but in my family if you don`t plan things early then they never happen. So, i`m trying to plan my sweet sixteen. I`m going to have about 8- 30 people there. I don`t know if I want just close friends or not. So if anyone had any ideas ( for either a large or small group ), themes, recepies, games, movies.. Anything that would be great! i really would appreciate the help.