I have followed Bob Phibbs, the The Retail Doctor for several years and I am a big fan of his work. He once wrote about a card that he carried with him when he was out and if he ever visited a store and was ignored, he would leave the card when he exited the store.
When I read that post, I thought that is something that I should do. So I produced a stack of the card that you see above and have carried them in my wallet ever since. The other day, I dropped a card off in a local shop.
I just wish they knew that it was also a gift from Bob.