The Free Paper Pirate Hats at the Anime Con were a huge success, IMHO. ^_^
I dressed up as Scudworth from Clone High, and found that the local University event news-letter made perfect pirate hats, so I mass-produced them and gave them away free.
Got lots of cool pictures.
Nothing like silly, free, engaging stuff to make life interesting. You meet the coolest people just doing stuff like that.