The travel sketchbook, or carnet de voyage, is HUGE in France. There are festivals devoted to them in lots of places. Artists come from all over Europe to show off their work. I’ve now been to two, and am booked for a third. It’s so inspiring to wander around, seeing hundreds of different kinds of work, gathering ideas, not to mention materials and samples at the shop!
Not all the photos below are very good, but they give a good flavor of the variety of sketchbooks on display.