Context:
http://openteacher.info/node/46
#39: The 3 "R"s.
#47: Trees shot dead: example speech + vocabulary analysis.

Each of those wasteful behaviour is an opportunity to teach some English vocabulary at the same time as teaching a more conservative way of using natural resources. The teacher may use any such occurrence as an example to avoid. But doing so, the teacher must be acutely aware of the student's feelings! The point is not to make them feel bad by blaming them, but by gently pointing out why this behaviour is wasteful, why it matters, telling the student that it's ok because they didn't know better before, but showing them an alternative way. Actually, this type of occurrence can be made fun. For example, I have regularly made the whole class laugh by explaining that paper comes from dead trees, and mimicking a hunter who goes in the forest with a shotgun and "kills" tree by shooting at them, and subsequently mimicking the trees being shot dead, putting their hands (branches) on their hearts (trunk) and falling over. While the students are still laughing, I can go back to where I started: explain that it is better not to waste paper, suggesting alternative, more conservative ways to use paper.

It'd be fun to have a short animated video with this scene. It could be done with Blender, which hopefully I'll have time to start to use earnestly by the end of the year.
The site http://overshoot.tv/ would be more suited to collaborative blender production, with other blender artists.