Most places where people do their weekly groceries in Spain have at least a small book section if not a bookstore by the entrance. It's a typical thing to bring over to the beach or a weekend trip that doesn't matter if it gets damaged or lost.

Myself I have an e-ink reader but almost always take a paper book on the subway. It's still better quality print, not fragile in any way that matters, and I don't have to think about charge or aging electronics. I only bring the e-reader for manuals and such that change too often to be worth the paper cost, but still miss the old coding manuals with their ad-hoc page sizes, the spatial sense of where the information was in a book was part of the memory anchoring.