working on a new direction now: anagrams of letters from the QR messages (e.g. first or last letters of message or quote within message), using:
http://anagram-solver.net/ (note the option for anagrams using only part of the letters)
https://www.arrak.fi/en/ag/a few nice hits, so far:
deemed sedentary (last letters of the 15 messages)
ended easy (last letters of everything in quotes)
say needed (last letters of everything in quotes)
days end (last letters of everything in quotes, partial)