I went to Wal-Mart and bought a corkboard. Then I painted it to match the room it was going in. I painted the cork part also as you'll see from the pictures. Then once it dries, you can hang it on the wall. Just push your pins into it.
This is my daughters board. She collects mostly Tinkerbell.
This is my sons. He collects lots of different things.
And this is mine. I have it hanging in my kitchen by the phone. I just love looking at it.
I love your idea. It looks so cute. My boys got into pin trading last week when we were there and I was wondering what to do with all of their pins now that we are home.