A black shirt, with the slogan "What happens in Vegas, gets Photoshopped out".
I managed to acquire one for me, and one for marypcb. Not that I'll do much photoshoppery on my Vegas shots - the city and its desert surroundings are just too photogenic. Well, apart from using some of the newer graph cut-based stitching tools to build artefact-free panoramas.
In related news, my hefty Photoshop CS3 tutorial is in the latest copy of Computer Arts Projects. Rush out and buy the camo-wrapped issue now, and be ready for March 27th