Perfect Shirt For Travel (originally uploaded by garrettmurray)
I bought a Hubwear shirt at a hipster craft fair in the McCarren Pool over the summer and I love it. You pick your two destination airports (in my case, JFK and SEA, of course), and the shirt has your trip on the front and your return on the back. If you want, you can also get a one-way shirt that has nothing on the back.
It's a really fun idea, and the little touches count—when I ordered they gave me a "boarding pass" as a receipt and ear plugs "for a more comfortable ride."