here are some rules
1. you can't raise the dead
2. you can't change people's opinions
3. you can't change the way people act, their personality, etc.
scenario 1: you were going through some place (attic, basement, cave) and found a strange lamp. you rubbed it, attemtping to clean it, when all of the sudden an alien, a boy, and 3 girls come out. apparently, they were genies that cramped in the lamp for quite a while. you get 3 wishes from each, which means you get 15 wishes each.
Scenario 2: you have been stuck in the lamb for a long time. Just as you were about to give up hope, someone rubbed the lamp. You came out and saw an alien, a boy and 3 girls. You can grant 3 wishes each, which means you have to grant 15 wishes. Dang....imagine the possibilities!
Scenario 3: make it up!