Sweet 16 party ideas?

I am having a double sweet 16 party at a big clubhouse with me and my friend. We are having decorations, music, cake, ect... NO PARTY GAMES/ENTERTAINMENT IDEAS. Not entertainment like Dj's and dance floors. Entertainment like games, and things to keep 50 teens entertained for hours. PLEASE give me ideas. In Orange county CA and having our party In Yorba Linda, if you have anything near here that we can have at our party please tell us so. If you have Fun party ideas please don't be shy to tell us. THANKS!