Ideas on an individual performance?

My school is organizing a trip to visit Sri Lanka next year, and there is only 18 spaces for pupils! I have made it to the top 25. In order to choose the 18 students, we are being took camping for the weekend. During the weekend we will undergo a series of tasks to test our mental and physical strengths, one of these tasks is putting on a performance for the rest of the group. I have no ideas at all! I have no special talents, and most people are doing dances. I want to do something different, so any ideas? This means a lot to me so thanks for any help guys :D