I don't really need much. Anything I need, I already have.
I keep my "poker related" money management completely separate from my "normal life" money management.
I have a partner who encouraged me to start playing poker to begin with. I agreed to try it out, but added the challenge that I would never invest a penny into anything poker related. Anything I buy, poker related, has to come from money I have won, playing poker. This is one of my own challenges to myself.
I was going to start from freerolls and build my poker roll from there, but PokerStrategy made my life so much easier when I discovered this site, and actually got $50 for free. hehe
Things I have bought from the "poker roll" are PokerTracker 3, a years worth of TableTracker subscription, and I'll guess about $400 worth of poker books. (Amazon.com loves me). I'd list them, but no one really cares about that, I'm sure.
Like Grimzor, right now my focus is more on building my roll and expanding my knowledge than buying things with my poker roll.