Before I moved recently, I had an ideal way of displaying my pins. Since my Disney collection is rather large, I bought a bunch of cheap white bookcases at Ikea ($35 each) and put my Disney collection on it. Then I simply pushed the pins into the front edges of all the shelving and all around the book cases. It looked great.
Unfortunately, when it came time to move, the bookcases couldn't come. So, I had to pull the pins out ... a few of the actual pins came off the backs of the pins. Only two or three, but enough to make me cringe.
Now I have a better idea. I cannot frame my pins and hang them on the wall: too many lithos and signs from Disney! So, I have bought some very large pieces of foamcore board. You can get it at any art supply store. Each one will cover half of a door. So, I am going to stick two of them to a door so the entire door will be covered, and then push all the pins into the foam core board. It's an inexpensive yet elegant solution to a "sticky" problem.