"Designer" labels on clothes. In fact, any brand names on clothing of any kind, such as Harley-Davidson. OK, if you're a farmer, you can wear a cap with a tractor company's logo on it, but only if the tractor salesman gave it to you free. And only when you're outdoors and you need to shade your eyes, or keep the top of your head from getting sunburned. Under no circumstances should you pay a premium for a visible brand name. Let them pay for their own damned advertising.