This is what I do when I should be doing other things. Every time I feel like reaching for my cell phone, I find my sketchbook instead.
I travel with art supplies, arrive early to appointments if not only to eek out a few minutes of sketchbook time.
There is only one brand of sketchbook for me: Global Art Hand Book Artist Journals. I prefer these two sizes at the moment: 3½" × 5½" and 5½" × 8¼", both landscape orientation.
First I embark on a collage blitz in the studio, prepping pages with bits and scraps from other projects. Later, while watching TV, listening to podcasts or music, bored at a meeting, waiting for a plane and on a plane, I will sketch.