I came across an art installation from 1992 by sculptor Winifred Lutz in the Cranbrook Academy of Art museum, Michigan. (Source Interior Design Magazine Sept 1992)

2400 Mexican beach pebbles, suspended just above the floor on a forest of jute twine, repeating the pattern of the ceiling.

This installation trigers my memory of Lexiei's investigation about the floor and ceiling (...and also Brad's wall investigation.) I think that Lutz wonderfully addressed and connected these two plans in a minimal fashion.