Pocket notebooks.

“Have you pen and ink, Master Doctor?”

“A scholar is never without them, your Majesty,” answered Doctor Cornelius.

– C.S. Lewis, Prince Caspian, ch. 13

Two notebooks, one black with a silver pen and one brownish with a bronze pen, are placed on a wooden surface.Two brown leather notebooks are placed on a black surface, each with a pen resting on top.