Deck yourself out

If you like Harry Potter shirts, but don't want to actually set foot in a Hot Topic, there are still some pretty awesome options out there:

Support Buckbeak:


I really like this one--very wearable, not too geeky (well, as these things go). [Source]

And for the guys:


Like the image. Less sure about the yellow. [Source]

And if you're really willing to hunt, I've seen some awesome "Free Stan" shirts.