Each image was made through a process whereby Hokusai's drawing on paper was glued to a woodblock to guide the carving. So I think woodcut
Many designers will have to deal with aspects of all of the above; whether designing apparel, textiles, objects, graphics or printed material the ability to present information in a simple and straightforward way is important for a designer to engage with their collaborators and to effectively market their product to their client, designing something which is ergonomic also is important as that deals with how their product or design will physically relate to the body, they will also need to understand the limitations of their design tools as this will have the potential to inhibit the production or quality of the outcome, also a balanced understanding of visual literacy is key as this is important for a designer to effectively evaluate the material from which they draw upon in their research and design process.
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I think a good addition to a collection of writing instruments that were unique to the twentieth century would be pens and pencils like we have now because back then they dipped feathers in ink and then wrote with them. They were very special because people wrote there feeling and grocery list and drew thing as art. And maybe more to add on would be paint brushes to make beautiful art like they did back then. I hope this helped u and that all your questions are answered.