Recycling Security Envelopes as Collage Materials

A couple of months ago, I read in another blog (forgive me for not linking if it's yours, because I don't remember whose it was) about using opened security envelopes as collage material.  I began looking at the business envelopes I receive almost daily in the mail and noticing the cool patterns inside.  Not only are they really cool, but there are lots of designs and colors.  In just a few weeks, I have collected 14 different ones.   Today, I laid them out on the floor to choose some for a project and my little helper, Purrkins, came to hold them down for me.