When describing to John Snow how a illusion works (talking about Mance's disguise as the Lord of Bones in the books) Melisandre states that having something from the person who you are being disguised as, such as:
A dead mans boots or a bag of finger bones (I've paraphrased as I don't have the exact text right now)
helps make the illusion more real.
The bag of finger bones immediately reminded me of Davos, who'd lost his lucky knuckle bones during the attack on King's Landing and his almost drowning.
As Melisandre has met and interacted with Davos, is this a sign that she maybe that the bones, and has some yet unrevealed plan for using them, or him?