I would buy a pull-up bar.
And maybe a punching bag.
I feel like both of those things would make me feel tough. But, since I have to cram myself, my Dad, and everything I own into a Toyota Camry this August, and the lot of us has to make it across the country, I won't. I guess I'll be glad I still have the money, if not the muscles, when I go to buy my textbooks.
I think my Dad would be proud of my reasoning abilities and my (if intermittent) bouts of self-control.