when you sit in your seat you usually will have blanket,pillow,head set. Slipppers, eye shades, ear plugs are available as well as toothbrushes just ask them as they wont give them out unless you ask. I am sure if your want a snack between meals they would have something you could munch on but not many choices and it probably is
not a hot food. Drinks they will serve soft drinks selection of 2/3 beers plus a white or red wine. But no spirits or etc.

I am not sure about tours of the cockpit after the flight but you can ask just and see if they allow.
Again no idea about drawing books and etc but a good chance they do.