No question on this one [the TIC & the MSU Libraries] have been one-upped by the Cornell University Libraries. We will admit to never even thinking of doing something on this scale; see: http://cornellsun.http://cornellsun.com/blog/content/2012/12/03/cornell-lays-down-grass-inside-library. We are humbled.
It is worth noting (in the Blog posting comments) the nearly-immediate polarization of thoughts about this installation – so typical of many-things turf.
Worth noting also: “cognitive relaxing effect” as a TGIF search is a bust; but for materials relating to the objective underlying this concept try searching “benefit therapeu” in TGIF Basic Search , or, better yet, “(value OR benefit*) AND (therapeu* OR (well adj being) OR cognitive)” in TGIF’s Power Search option.