As mentioned on the podcast, we're working on Stack Overflow Trilogy stickers. I just placed the order with websticker, in fact, and here are the proofs:
And because we fully support members of our League of (web) Justice, I ordered some for our fellow league member, How-To Geek, as well.
(all stickers are 4 1/2" wide, custom die cut white vinyl, and printed in full color)
These will of course be given out at Stack Overflow Dev Days, and in other ways that we haven't quite figured out completely yet.