What dares can we do while playing our version of SilentLibrary at church mission camp?!?

We are bored and want something interesting to do. We are going to try and be quiet and do stupid stuff without laughing just like MTV's Silent Library. It is probably just going to be teenage girls playing. Remember we are at church camp so nothing inappropriate or harmful. Our ideas so far are leap frog and eating pickle salt. Please help. We need more ideas!