I found both of these examples in CMYK magazine. The first is a design for rolls of toilet paper and tissues. This caught my eye because I thought it was very clever. Every time you use something, you are making the trees disappear, which is what is actually happening. I'm not sure how affective this would be in helping the environment, but it's a good idea for a design.

The second is packaging for a brand of beer. I was just really drawn to the red ribbon on the front and the typeface.