Leaving the Duck
At that time, my work was usually contracted through builders, and I rarely worked directly with home owners. I started leaving the ducks on finished jobs; on tub decks, shower niches, counter tops, etc.
A few weeks later a friend, who is a Realtor, called me and said how much she liked my work at a house she had shown. I asked how she knew that it was me and she replied “Well, I saw your duck”.