Fabriano A5 Glue Bound Dot Paper Notebooks

Glue bound so you can easily pull out pages when you’re done with them, dot paper because you want your text and notes and drawings to be the dominant visual elements on the page but you also want to write in more or less straight lines, A5 because you’ll be carrying this around all day in your bag.

Although a napkin would probably also work fine if you had the right pen.