I have been collecting quilt pins for years. I have pins from every year that I belong to my quilt guild.
One year I made a minature quilt and I then made a shadow box with the quilt as the backing. I pinned all my quilt pins on the quilt and hung it up in my sewing room.
I was quite please with it. I shared it with my quilt guild and showed them how to make one of their own.