HeadStand
There are, give or take, about a billion and one ways to hang or store large headphones at your desk. One of the more stylish ways you could do it is with the HeadStand made by Just Mobile. Like so many great desk accessories these days, it's made of high-quality aluminum and looks great with any Apple geek's setup. A particularly nice feature is the cable-storage wraparound at the base, which helps keep your workspace nice and tidy.
It's available in silver and black, both of which will run you about $45.