There are 8 occult items in total to find.
The Amulet of Blood is on the floor in the Locked Bedroom in between the bed and wardrobe.
The Eyeball is gained by completing the puzzle in the Ocularium room. (Vent in Pantry) Also gives you the Ocularium achievement.
The Pentagram is gained by completing the puzzle in the Observation room. (Vent in Study) Also gives you the Observation achievement.
The Monkey's Paw is gained by completing the puzzle in the Monkey Hall. (Vent in Bathroom) Also gives you the Monachus aula achievement.
The Sacrificial Dagger is found in the boarded up recess at the back of the cave under the Pantry.
The Capstone is gained by completing the puzzle in the Illumination room. (vent in Upstairs Landing) Also gives you the Illumination achievement.
The Book of Spirits is found in the Study lying against the wall under the painting.
The Ring of Protection is found in the garden. Click on the grave at the rear of the shed and it is lying ontop of the grave.