A new trend has grown a lot in recent years, especially in Japan; mask wearing. They are the closest publicly-acceptable thing to a gag (outside a scarf, which I wear when I can).
I find them wonderful for cold sufferers who don't want to appear conscientious in public, but am a little worried about the social impact. Apparently the act of wearing a mask makes communication seem less obligated, so many introverts wear them as, sick or not.
Still, some of those ladies look real cute in them....
http://www.japantoday.com/category/lifestyle/view/more-japanese-youth-wearing-surgical-masks-to-hide-their-face