[Diplomacy] Being able to give items via diplomacy

I know currently that we can use gildar and influence. Would it be possible to include items in this list? I don't have money but I would like to gift you this ignys longbow instead. This ties in more of the RPG element. For an RPG mod I think this would be a useful feature between two opposing sovereigns. The ability to trade items. You know, "I shall gift you these rings of power, to help you rule your people." Or here is a seeing stone... you see my view and I see your view.

Could this be possible?