NESTA added their waste paper to the office Christmas T[re]e... 

On average each UK office worker prints out twenty-two A4 sheets of paper a day.
That's two 40ft trees every three years - and that's not including the envelopes, magzines,
newspapers and junk mail that lands on your desk each day.

Imagine how many trees you'd need for an entire career!

[re]design likes to...

Think before you print
Print on both sides
Specify recycled stock
Use scrap paper for notes
Recycle paper