Untangling headphones

Those few common tasks and puzzles that are so common in our daily lives and yet so unmentioned in conversation. The one that I recently consciously realized was the task of untangling headphones or other wires. It's like a puzzle, and one that I do almost daily. It's such an ordinary part of my life, I don't even really think about it, I just do it.

If you can think of others, throw some in the comments :)