So your coffee shop customer asks for a window cling to promote a new selection of pastries. The coffee shop is on a street with a lot of passing foot traffic and the owner figures that a nice big window cling will do the trick. But this is where you come in . . . How many passers by are going to turn their head to look at the window? Wouldn’t the message be more easily seen if it were in their line of vision like, say, an A-frame sitting on the sidewalk? Value-added service such as good advice can impress and snare a repeat customer.