Visible crew/equipment: When the two boys are in front of the Grinch's front door, a big monster comes out of the front door, scaring them. The boys then jump off the side of the rocks, and a cable attached to them is perfectly visible.
Suggested correction: I've watched this scene over and over, and there is no cable visible as they jump.
Visible crew/equipment: After the Grinch takes the little car, in one of the shots you can see a stage light behind him. (00:57:25)
Visible crew/equipment: When the Grinch is building the sled as he is putting the tin sheets on it there is an overview shot where you can see the shadow of the camera. (01:01:01)
Visible crew/equipment: The movie was filmed in a large set to recreate Whoville, but in the mayor's first appearance, if you look in Lou Who's glasses, you can see a stage light from the ceiling above.
Visible crew/equipment: While The Grinch is returning to his home for the first time that we see and after he says "one man's trash is another one's potpourri" while he's entering you can see the shadow of the machine that holds the camera up high behind him and Max.
Visible crew/equipment: When the monster comes out of the Grinch's door in the beginning, the camera's shadow is visible at the bottom left corner. (00:05:12)