I have not finished reading the rest of the threads, pages 38/39, but there are loose articles and lost articles and unreported articles.
Earlier it was said that as ground crew he would expect a CM for a loose article. An unreported one, yes. Practically everything taken into a cockpit is a loose article until properly stowed.
I pointed out earlier the self-evident fact that a BA pilot had used a camera on the flight deck and that while the CM was in progress.