Visible crew/equipment: This mistake occurs during the pre-funeral scene. When Isaac is at the podium, they occasionally show a shot from over his shoulder where you can see Gus and Hazel. All the way to the left of the screen, there is some sort of black object that looks like something that holds cords on the floor. This object disappears by the time Hazel gets up there.
Visible crew/equipment: When the little boy is lying in bed looking up at a hole in the wall you see a creepy hand move, the while time, if you look closely, there appears to be a human hand with human fingers to the right of it in the darkness.