The first thing that came to mind was my hand.
That I can count binary on. (Count binarily?)
I also have a small case FILLED with Pokemon cards, so that's worth... something.
In more recent news, I have a GH2 guitar. A remnant of days gone by, made ancient by the ever-increasing perception of time's eternal flow. Days growing shorter, months becoming years becoming eons... where does it go? Are we destined for a future where leaps are made in weeks that previously took decades? And where will it, if it is even possible for it to, end? The mind sear- whoa. Sorry. Got existential. 1AM does that to me.
Uh... that's about it for nedry items... WoW calendar? Copies of Warcraft 1+2? My dad has a TON of old Star Trek and X-men cards and comics; I nominate him.
EDIT: And it's renaissance. Googled, my first try was renessaince. [/spellingnazi]
Oh, that's another. I know a bit of code. , . //that's about it. I learned for-if loops (probably not the right name), tables, and how to make those little 'chat invitations' that... certain... sites send to you that bounce around the bottom of your screen.