I agree with the scavenger hunt idea...i loved those when i was a pre-teen, and even teenager! Now, i am 35, but i too fondly look back on those fun times! Also, i have a 13 yr. old daughter and 'truth or dare' is something she and her friends like to do. (Ihave an 8 yr. old daughter, a 4 yr. old son, and a 3 mo. old daughter as well!) Since you are having a bonfire, have everyone take turns telling spooky stories! You'll get a laugh at some of the stuff they make up! I'ts a great imagination stretching game. Either way, a bonfire with hotdogs, chips and friends will be a goodtime!!! Let us know how it turns out!