I'm nearly done with the game, but I'm still missing these items. Can anyone help?
Fossil is in Nein's lab, do some levitation jumping about. I'm having trouble describing where the brain is, but it is on an outside ledge.
In the asylum, when you get to the room with the bubbling green goo, there is a small platform with windows up against it. If you can manage to get over there (you'll need to get to some higher ground, since it's impossible to levitate up there), go through a window. It's on the ledge.