minkbikini wrote...
looks like a lock of hair
I've thought the same several times.
Actually, I've wondered how/when the favor is replaced. I mean, it can't possibly "last", not through numerous battles, scrubbings, rolls in the dirt, demonic attacks, etc. At some point, it would be ruined or soiled. So what? Does he clean it? Ask Hawke for another one? What?
I've got this canon floating around in my head, actually, where Hawke actually sends him favors routinely, that it becomes something of a ritual or habit. A means by which she tells him she's still waiting, faithful, committed, whatever you want to call it. His wearing of it, then, is his answer or response, to her.