Every day 22,000 trees are used to make the catalogs that come in your mail box. Do you really need them? If there any where in your state or post office where you can cancel the subscription of junk mail in the mailbox then do it. You waste so much time sorting the junk from the real mail that you can spend doing something better.
In the meantime take the entire junk mail and save it in a box or bags and when you reach an amount that you feel is enough, go and recycle it and get some extra cash.