Please Help Asap

I am having a suprise party for my boyfriend who will be 17 next month. I have been trying to think of ideas but nothing cool is coming to mind. I really want this to be a cool party and one that he, and everyone else will remember. Please help with any ideas at all. Any ideas that have to do with a party will be nice, they dont only need to be about games. Every idea is greatly appreciated. Thank you everyone soooo much....