My father is a skilled CPA who is not great at self-promotion. So when an advertising company offered to put my father's business placard in the shopping carts of a supermarket, my dad jumped at the chance. Fully a year went by before we got a call that could be traced to those placards.
"Richard Larson, CPA?" the caller asked.
"That's right," my father answered. "May I help you?"
"Yes," the voice said. "One of your shopping carts is in my yard, and I want you to come and get it."