I have a handful of presidential election buttons that I wanted to display in my apartment. The problem was that I wanted it to be organized and classy without looking like I just put a bunch of buttons on a wall.
I went to Ikea and bought $2 frames that also come with matting. Then my idea was to buy squares of cork board. Cork board is actually a little pricey, but when I was at Ikea I saw some cork board placemats that I bought for $4 for four mats.
I removed the glass and cut out cork board framed pieces of cork. Now I have a grid of buttons in my house.