Depends on the situation, but yes, I still keep notes with a mechanical pencil and an A5 spiral graphing paper notebook. I do use an electronic notebook (Joplin) for some things, especially if what I am working on will end up in a document or if I need to include screenshots, links, or other embedded items, but for general notes, paper. And, there are places I go that do not allow technology, so having the smaller notepad has come in very handy.