Elemental powers. Honestly, how fun would it be to walk into school/work and then just blow up your principal/boss with a fire ball? C'mon, admit it, it'd be pretty fun. Then the police come, and you sit in the hallway. They shoot at you, you make wind to stop bullets. Then you use flame again, and FWOOSH! All gone! Or earth, and then just crush them. Or freeze them in an ice cube. And then jump out of the building, and use wind to keep you aloft and to fly you to your destination! Telepathy or Telekinetics would be cool, too.