An empty box shows up via UPS. Inside is a map from my house to the nearest Goodwill donation center.
This simple, elegant, inexpensive campaign was so remarkable that I told everyone I saw, for weeks. I showed the box to everyone who came to my office.
Which is the whole point of word of mouth marketing: Give people a reason to talk about you.
And that doesn’t take a big budget, a gimmicky street team, or some “experiential marketing” program.
You just need one great reason to talk.