(Caribou-OOH) Here's a pretty hot idea. Colle+McVoy in Minneapolis introduced Caribou Coffee's new hot breakfast sandwiches by making bus shelters looks like ovens—with actual heat coming from the coils.
222 Awesome Advertising Ideas From Around the World
Bench Presses Advertisement into Bare Thighs: The ad agency DDB Auckland altered benches to press an advertisement for Superette, a clothing chain in New Zealand, into the bare legs of people who sit on them. They read "Short shorts on sale Superette"
Creative Advertising on Buildings - Anando Milk Building Advertisement (Considering that every child lives in a world of fantasy, the idea was to encourage kids to drink more milk by exaggerating the benefits of milk)