Funny you should ask! I was just thinking about the very first campaign for which I really worked hard. A woman came into the campaign headquarters and asked if she could have some bumper stickers. Excitedly, I gave her about ten of them, and she asked for more. At this point, I asked her where she planned to distribute them. She said, "Oh, I use them to get the lint of off my sweaters! You just can't beat a bumper sticker for that!"
I just stood there, with my mouth open.
However, later, I did find out that she was right!