Yup. Plastic, paper etc in plane's interiors is lighter than water and will float if not secured to something heavy. Just a matter of time until all sorts of light weight material is on the surface.
“A government is just a reflection of the people that create it. Los Angeles has a majority Third world population. A Third world people can’t create or maintain First World institutions like an honest, efficient government.”
Used to work for a company that makes Nomex Honeycomb material. All the interior A/C panels are made of Tedlar/Nomex Honeycomb because it’s extremely light and since it’s a closed cell structure it floats.