Wearing "Green"

In our house, we use a lot of paper for art. Even with coloring on both sides, using scratch paper and always, always recycling leftovers, it can feel like a bit much at times. So we've been using our imaginations lately, and seeking out projects that utilize our 'trash' a bit better.
What are some things you do to be more conscientious crafters? Do you have any specific resources you turn to for ideas?

Some scissors, a mixture of blue and yellow washable paint (makes green--didya know?!) in our cleaned-out applesauce cups, Mommy's hot glue gun, and viola! A lovely pair of "green" St. Patrick's Day hats. Top of the mornin' to ya!