Look at the coins in the blue folder on the middle shelf; you can't take them now, but you will at the end of the game.
Endgame: After You Call the Scientist
There's a dragonfly-shaped bug on the boots; grab it. The perfect place for this bug is --
-- in the flowers in Zoe's room, where there are already some dragonfly ornaments. Yay! Place it, then go to the cabin to listen in.
What do I do with what I learn?
Finally, the missing cipher wheel for the cylinder puzzle in the cabin fireplace is on the left side of the middle fireplace.
How do I open the cylinder puzzle inside the fireplace safe?