I do know that a thick stack of papers makes a good splint when wrapped around a forearm. And I do wonder if Rog might have some on him as I think of him being a scholarly type. Otherwise, the party visiting the slaver's camp might find a stack of documents there to use. It could introduce all sorts of possibilities, if the slavers kept records of just who they had captured and sold over the years.
EDIT: I do suppose that parchment might be too precious a commodity to waste on such lists. Hmm....