Main stand portion: Bjarnum Shelf Bracket 11''
Headphone holder post: Capita Leg 4''
Wire wrapping posts: Attest Knob
The idea is to drill a bunch of holes in the main bookshelf stand and use those as the primary hook for your headphones, with the smaller hooks for (we're guessing) some sort of wire management solution. Either way, it looks a whole lot better than having a fat pair of headphones taking up room on our desks, so cheers!
[via IKEA Hacker]