Signs - it's all about signs.
Capturing the reality of my surroundings in Mumbai, I noticed some painted signs that might go in a flash at the next downpour or overpainted to some other reasons. They are the right subject to use in a travel book illustrating parts of the town. Subjects like this are all around us, and it is not limited to street and travel photography.
Immerse yourself in your world with your camera as a companion and start seeing all the new things and not at least interesting light around you.