Check out your mail from the USPS!   I save my cancelled postage stamps to use as ephemera on tags and cards.  I have had great fun using junk mail to make cards, tags and die cuts.  I received a mailing from Crest White that had beautiful bright blue paper with silver trim.  I used it on several cards that I made using both the paper and the envelope they sent. 

A Harley Davidson advertising brochure had symbols to use on a special card for my fun loving sister-in-law. 

If you have a really special day you want to remember such as an anniversary, birthday etc. go to the post office, purchase a stamp and have them cancel it for you.  Take time to purchase special stamps you would like to recycle and have your family save the cancelled stamps for you. 

Other mail has really fun graphics or big letters that you can incorporate into a collage. 

So, enjoy your junk mail!  Or as they call it in the post office, your third class bulk business mail.  Go postal!