Examples of what I mean:
Instructions lead puzzlers to a library where the names of donors are inscribed on bricks out front. Along with some piece of information that is given to them on a piece of paper, they are able to find a phrase which is the solution to the puzzle
Puzzlers go to a certain wall where ceramic tiles of different colors are irregularly laid out. Along with information that they have brought with them on their phone, they are able to find a one-word solution to the puzzle
Do you have any tips for these sorts of puzzles? Methods for finding patterns? Pitfalls not to fall into?