When my older kids were in grade school they used to get these picture button included with each sports picture. As you can imagine I collected quite a few. Of course the question is what to do with all these buttons? I usually just stuck them on the bulletin board and that was that.
Then I put them all around the outside and...a perfect border formed. I took them down for a while, but I really missed them. So back up they go. I love the early ones of the kids who are now in college!