The Presentation Zen Sketchbook is the first sketchbook I actually filled, and re-ordered. It’s great because:

• Some pages have a 2×4 grid of boxes, which is perfect for multi-step user flows or planning presentations, but

• Some pages are blank, allowing you do to freeform sketching, but

• Most of the “blank” pages actually have small images and phrases, which avoids the mental block of staring at a blank page, and

• It’s not too big or too small

Highly recommended if you’re not happy with what you have.