Towel off with the Wimbledon 125th Anniversary Championships.
Most avid players carry a towel for mopping up sweat, drying hands, showering, whatever. Quite a few have a pretty dingy looking one. Freshen up your racquet bag with a signature Wimbledon towel. Yes, these are the decent size ones (not hand towel size) you are seeing on court in London.
Find them at the Wimbledon shop.