Add different things inside multiple lightbulbs
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.
Mosaics by Laura Harris of Melonhead Gallery photo. This is my all-time favorite!
Horrific: This image lays bare the devastating effects trash left on beaches has on the world's sea life