Near the end of the movie Shirley MacLaine and Bob Cummings are on a couch which rises high into the air. In a medium shot there is a white lampshade in the background that is below his shoulder. In a following medium shot the bottom of the shade is bout 8 inches above his shoulder. In the next long shot the top of the shade is at least a foot below the bottom of the couch, a difference of about 4 feet between shots.
When Louisa joins Rod Anderson on the flight deck of the airplane, it obviously is not one of a 707, as the exterior shots establish. There is no flight engineer position, and the control yokes appear to be from a Douglas airplane. In addition, there are a number of instruments behind the pilot's position.
Shirley MacLaine is clearly hit by one of the robotic paint brushes in the painting sequence with husband #2 Paul Newman. She is in the background walking after him amongst the animated brushes, but keeps the scene going after the contraption hits her in the head. It is kept in the finished film.