Pay attention to the "little" things.
Walking near a local Nordstrom store this morning left little room for doubt... there was a sale underway at the store. In fact it just wasn't any sale, it was a "HALF-YEARLY SALE".
How did I know? There were no posters, fliers, or bill boards in sight. The news was carried outside the store by customers... on the sacks they were carrying (above). Though this sale was limited to items in the men's department, such generic sacks could be used for sales in any department.
While businesses focus on advertisements in "major" media vehicles (radio, television, newspapers, magazines, etc.), it is often the little things that make a big difference.