Once my wardrobe consisted mainly of free t-shirts I got through TSR and Wizards. They were uniformly black. These days, the only black game shirt I have is a retro Advanced D&D one I paid for.
But I got a cool new free t-shirt today that says We Make The Rules, with some cool framing art. On the back it reads Wizards of the Coast R&D. And unlike all my old shirts that were 1 size too large for me, it fits!
Looking forward to adding it to the shirt "rotation." Yes, little things like this make me happy :-).
(Speaking of cool t-shirts, today I'm wearing a shirt that show 5 "test your psychic ability cards" Zener cards, under which reads Teach The Controversy.)