Even though I do the bulk of my sketching digitally, I also take a physical sketchbook pretty much everywhere I go. Including coffee shops.
I used to do all my work in paper sketchbooks, whatever was offered at the university book store in a spiral-bound, 8.5x11" format. Since I started doing most of my work digitally, traditional sketchbooks have kind of taken a backseat. But they still get used. These days I prefer smaller format (let's say "travel-sized") sketchbooks, and my current go-to is a regular-ass Bic pen.
I hope your year is off to a solid start. And if one of your resolutions is drawing more (or even learning to draw), consider this my encouragement to KEEP AT IT. There really isn't any substitute for putting pen to paper -- or whatever your medium of choice happens to be.