I would sneak into top secret government facilities (area 51, for example) and I would steal a lot of stuff (guns, money, test answers, the works). I would see if I could go through walls (which would also be helpful) and reach Danny Phantom status :) or fail. I would beat people I hate, constantly harassing them. I would travel the world (for free of course, hiding on planes) or maybe just visit Japan (and steal stuff).