Sennheiser makes a nice clam that goes on the edge of a shelf. I have approximately a dozen cans and find it works well with all the various types that I have (Grado, Auduze, Berindynamic, AKG, Koss, etc) and they work well. I found them advertised in Crutchfield a few years back and bought a half dozen. They are great and I have them all available at a moments reach. I also use the Core Audio Design Zebra headphone stand, which I consider one of the best of all time.