Reuse, Reduce, Recycle.
We all remember the three Rs. Yet, we often find ourselves struggling to make sense of it.
This will help you, though it is but an idea at the very least.
This Office Waste Paper Processor converts your used papers and notes into pencils. Sounds like you could really save the earth, though nitty gritty details like where to slot in the lead or glue aren't addressed.
You can get more info and see more pics here.