Having a mystical floating all powerful Genie could be a huge leverage on so many issues, people. Might not even use it just pull him out as a bargaining chip and or blackmail Though you would have to seriously monitor your own casual conversations as to not slip up and blurt out " I wish" after a friend says something minor relating to a hot chick or sporting event etc.

or who are we kidding, I'd wish for gold. Not paper but big fat gold bricks. Stored and cashed in as I desire.