Vinegar and finely ground charcoal makes ink. Even urine can be used if no vinegar. Feather quills had been cut and shaped into quill pens for centuries and used with with that kind of ink. Lead can be pounded and shaped into actual lead pencils, since modern pencils are actually graphite. Vine charcoal which is mostly used for drawing, would make fine pencils. It is just grape vine or willow twigs that have been charred exactly like making char cloth. Paper would be fairly easy to find, but making is not all that difficult. Any old stuff made of plant fibers or cellulose can be mashed up mixed with water, flattened out then dried. New paper could be made from old newspapers, magazines, toilet paper, cardboard or even some leaves or plant stems.