Glad you asked, especially since Lorkas is a mage, I think one of the things upstairs will be particularly interesting, depending on how much arcane knowledge he has. Well, to be fair,
@Thesius has a warlock, and
@Rafen a spell blade, so either of them could also find one of the things. Anyway, there's an item upstairs, shaped roughly diamond shaped, coloured a deep amethyst. There's something swirling around inside, kind of like ink. It's giving off a distinctly unpleasant vibe, magical in nature.
The second thing, is down on the main floor. By the hearth is a tattered, clearly burned piece of paper. On it, are the words 'Morthal' 'captain' and 'safe passage'. Whoever wants to find that is welcome to stumble across it. And as for tracks, it did rain during the night, and it's cold enough that the tracks have frozen into the muck. Not too difficult to find them around the farmhouse and barn.