I really like how the Surfrider Foundation have represented the effects of plastics in the ocean. Showing the plastic in sushi which is sea food to represent the ocean I think is a clever and very creative way to grab people's attention.
Leo Burnett Frankfurt Germany for Mcdonalds The universal fishing hook is represented through McDonalds upside down Golden Arches. This was for the Filet-O Fish campaign. The fishing rod was to emphasize the freshness of the fish.
This Wolverine/McDonalds poster is creative and visually-stimulating because the french fries look just like Wolverine's claws. It suggests that if you eat at McDonalds and get french fries, then you could be just like Wolverine.