I have a habit of making custom things for no real reason. I made these so I could put a design onto the faces of my cluster.

Update: I had to make some revisions so that they would fit nicer, and accept the new button onto the face without breaking, although I ended up making the legs of the button longer, straighter with no hooks, than when you insert it into the button housing you will melt the legs to the appropriate level to have it be flush to the face of the optiplex, and messing with the clips to the face of the optiplex to make it more reliable, and less prone to breaking.