Visible crew/equipment: Whenever Thing comes out of his little places you can see a wire that is used to open up the little hiding place.
The Addams Family Goes to School - S1-E1
Visible crew/equipment: If you look at the shrubbery, you can see the person performing our first glimpse of Thing moving around.
Visible crew/equipment: As Thing withdraws into the tree, in the wide shot, you can see someone's elbow pop out from the tree.
Uncle Fester's Toupee - S1-E31
Visible crew/equipment: As Gomez goes to ring for Lurch, the shadow of the boom mic is on the wall behind him.
Crisis in the Addams Family - S1-E24
Visible crew/equipment: In the play room, as Fester goes to leave, the shadow of the boom mic is on the wall behind him.
Visible crew/equipment: As Mr. Hinson and his aide get out of the car, the shadow of the boom mic is visible on the house.
Morticia and the Psychiatrist - S1-E2
Visible crew/equipment: When Uncle Fester climbs down the tree (after observing Pugsley interact with the shrink, a shadow of the moving dolly mic is visible as it moves backward. (00:22:35)
The Addams Family Goes to School - S1-E1
Visible crew/equipment: When the phone rings and Thing hands it over to Morticia, the camera zooms out and you can the actor playing Thing quickly hide behind the couch. (00:24:15)
The Great Treasure Hunt - S2-E19
Visible crew/equipment: When Morticia bounces the anchor on the floor, the wire used to make it bounce is visible when she puts it down.
Chosen answer: Being that this was filmed in a TV studio, the set would have been specially designed and built to accommodate Cassidy's height. Also, I live in an older house (100 years-old), and all the inner and outer doors are eight feet tall.
raywest ★