Creativity can do more to drive purchases. It’s all about fresh thinking, and timing. Outside select Kroger stores, Oreo and VML turned crosswalks into cookie ads. Painted black-and-white stripes became Oreo stacks, with cartoon faces “biting” the lines. A QR code on the sidewalk lead straight to an in-store offer. It’s called Oreo Walks — a campaign that meets shoppers before they even step into a store. Yeah, most small brands don’t have Oreo’s budget or access to Kroger parking lots. But...