It is always hard to maximize the space above a fridge. Since ours is right next to the stove, I built this pot rack. One flange secures it to the wall while the two vertical legs rest on the surface of the fridge. I made it two sided so that on the open end we could easily acces anything that is stored on top of the fridge in the open space this rack creates. I was happy to find these S hooks that fit around the pipes perfectly but only when it in pieces. In other words, they don't fall off when we lift a pan off the hook.
I think a general rule for small spaces like ours is the more that can be put out in the open, in an organized and pleasing way the more use can be made of the stuff that needs to be stored away because it isn't used as much or doesn't look as good.