What activities can I do for my 12th hollywood theme party?

I need some ideas/games/decorations/activites/food for my Hollywood-themed party! It's going to be in my basement in 4 weeks (about) Please HELP!What activities can I do for my 12th hollywood theme party?I know a short article about Hollywood Theme Birthday Cake Ideas. http://www.birthday-ideas.com/hollywood-theme-birthday-cake-ideas.php. I hope you'll find it useful. Good luck!