Searching for all of the clues was a really fun task. Ended up having to scan the screen left to right with the cursor because some of the clickable things were really small. Thankfully, there's a notification once the player finds everything at the location.
Something other games with similar features do is make it so that when the UI is hidden ([H] key / middle-mouse), that it'll hide the clickable items along with the rest of the UI. That makes it a bit easier to find things since the player can "flash" the items by toggling it off and on.
Currently, it seems to hide the entire scene or show another scene when toggling the UI in these sections (i.e. outside the cabin, hiding the UI shows an image of the crow; inside the cabin, hiding the UI shows a black screen).
Edit: The ledger part is a neat feature too. It's straightforward and easy to understand. Between that and the quest the MC receives, it makes it seem like the game will eventually be a little bit more open world/exploration.