Back in the 80s there were some very weird carpets in T1 at LHR between the entrance and BA's "Gate 5" (I think it was called gate 5).
Apparently it was a designated "very heavy use" area, and carpet Co.s used to test out their latest creations there. The patterns were naff in the extreme.
That's my total info on carpets for airports. Sad.
Carpets for pubs would be more interesting........