Stickers... I've seen some kit bags that were more stickers than leather. The choice of stickers says a lot. Too many guys seem to pose a bit with massive qty's of Harley, Body Glove, Sex-wax, and other cycle and surf stickers. Others OD on anti-management stickers.
I've always wanted to put three stickers on mine... the standard Boeing puffy-plane jobs. The first, a 777, with a big red X through it. Next, a 767, with another red X, leaving only a 737 without being crossed out. A graphic example of my career path since 9/11!