This question already has an answer here:
I have a pair of headphones with a long cord (2.5m / 8.2 ft) that I use at my desk. It's nice having a long cord -- I can move around at my desk and reach things -- but when I put them down they tend to get tangled around things, especially the arms of my chair. Any advice?
This is unlike the question about earbuds because I don't want to tie them short. (I was asked to edit to show how this was different from this question; you can see my answer just before this parenthetical.)