Sugar free Chupa Chups Great ad- completely solved it with a visual and a tagline. It's so simple but really clever. This is the type of thing that I'd like to make. There's a ton of other great ads in this article, definitely worth checking out.
Check out this satirical advertising campaign for the Charity Cordaid. The items are not for sale. The purpose of the advert is to highlight the difference between how consumers in the Western World look at material products. Oh the shame of it.