Stories of a traveler's encounters in different lands could be in a patch pocket book. Picture a book filled with short anecdotes of a person's journey, the people they met, the strange foods they tasted, and the beautiful landscapes they saw. It would be a collection of small, engaging stories that one could carry around and read during their own travels or just for a bit of entertainment during a break.
Stories about a little mouse's adventures in a big house could be in a patch pocket book. It's a simple and charming kind of story that would fit well in a small, portable book.
Folk tales from different cultures would be great for a patch pocket book. For instance, stories about how the moon got its craters in Native American folklore or the story of Anansi the spider in African folklore. These are short, interesting stories that can be easily read and shared, just like what you would expect from a book that can fit in a pocket.