I've got a pretty nifty button collection:
And that's not everything! I also have a handful of buttons on my lanyard at work (Barnes and Noble) featuring things we sell, like a LEGO pin, "Don't Panic," Ravenclaw crest, TFIOS clouds, and a TARDIS button.
Not to mention that my old computer is decked out with all kinds of stickers (Relient K, Hogwarts crest, LEGO logo, and even a Stargate SG-1 patch). The only reason I haven't put new stickers on my new laptop is because I've been collecting so many that now they won't all fit!
The buttons are always a conversation starter and I'm always looking for more. In fact, I already have a couple of new ones! SO MANY!
Yes, I'll be at BrickFair so you can ogle at a bag (and donate to its contents ).