Paper.....how do you use "less" paper ?

I am feeling like I use too much paper in my classroom. It seems like I use up reem after reem of paper to run off quizzes, pre and post tests, map activities and assignments, pre-reading assignments, vocabulary cross word activities etc., for my students. How do you other teachers, especially those of you who teach secondary, single subject classes, reduce the amount of paper you use ? Thanks for reading my blog. I welcome your ideas for reducing the amount of paper I use.