New Rules

Imagine you are stranded on a tropical island with your classmates. You have no supervision, no rules, no leader, no McDonald's etc... How would you choose a leader? What jobs would you need? What rules would you have? What if someone broke the rules?

Mysterious

You hear a knock on the door. You answer. No one is there, but on the ground you see three items: a paper bag with something in it, a key, and a phone number written on the back of a business card. Who left them and why?