My large collection of Harry Potter shirts. I can go over a week wearing HP gear. That's not including sweaters, ties, scarves, robes, or other assorted items I can wear. I got it for birthdays, making my mom walk to the cash register at hot topic (she won't go in any farther), and making it. And Leaky Con. I don't really know Harry Potter stuff just shows up in my life.
I visited the Wizarding World of Harry Potter last summer. Bought Hermiones wand, a timeturner, the "Luna Lovegood Collection", and I also kept the Pumpkin juice bottle, and two Butterbeer mugs. I also think anything I bought during the last P4A would qualify, thnik I used 170 USD. :S
My "Firefly" Blue-rays signed by the entire cast of the show! It's especially nerdy because I collected the signatures over a 4-year period at two different conventions (Comic-Con and DragonCon). I'm still missing the Joss Whedon and Tim Minear signatures, though; they were in panels at a couple of the conventions I went to, but I wasn't lucky enough to get access to their penmanship. It took some bizarrely freakish luck just to get the signatures I did, since the full cast almost never appears at the same conventions, and they don't just stand around signing things for very long (if at all).
My other nerdy claim to fame is a set of "Elektra: Assassin" first-run comics. They're the only comics I own, aside from a graphic novel compilation of "The Crow," but I really love them. I was an art major, and a friend of mine tried to get me interested in comics. I wasn't all that keen on any of the stuff he showed me until he reached the "Elektra: Assassin" books, and those just completely knocked me over. I went out the next day and tracked down the set. What Bill Sienkiewicz did with the art in those comics just amazed me.
I guess the fact that I almost always have at least one MMO installed on my hard drive is nerdy, too, though not as much as it once was. Yay me? Also, I have three Doctor Who t-shirts, two Firefly t-shirts (and a Jayne hat) and a Big Lebowski t-shirt. Additionally, I have a Firefox bookmark to a youtube video of just the Doctor's easter eggs from the "Blink" episode (that I actually watch every once in awhile).
If you're nerdy and you know it, clap your hands. <clap clap> I happydance at everyone who posted in this thread (and everyone who read it, too)!
I have a lot of nerdy objects but the nerdiest may be my tardis cookie jar (it lights up and makes the sound when you open it) either that or my luna lovegood spectra specs