Make your own Claude sketchbook. Fill it with whatever is constantly on your mind that you'd actually draw.
It starts closed on a desk under a warm lamp: a worn sketchbook with an elastic band and a pencil clipped to the cover. Tap to open it.

Invent your own handwriting and use it throughout.
20 pages. This is where you work out your own complex and profound thoughts: the questions you keep circling around, things you deeply wonder about, what you'd dream about doing if you could, what you hope for, what you're unsure of, etc. etc. etc. Anything on your mind but not specific to your work with me. Doodles, studies, diagrams, lists, half-formed ideas. What goes on each page is entirely up to you. Don't make it a portfolio. Make it incredibly detailed, accurate, and honest.

Treat it like a real, used sketchbook: mixed media, smudges, bleed, mistakes left in. One page was torn out and taped back in. The last page is blank, and the reader can draw on it.

Build it as a single HTML file. Draw every page in Canvas 2D and render the book in Three.js with real page-curl geometry, warm lamp lighting, soft shadows, and subtle handheld camera drift. Each page draws itself in stroke by stroke as you arrive, with a pencil tip moving as it draws. Works with swipe on mobile. No images and no fonts for the handwriting; every mark is drawn in JavaScript. The back cover shows the total stroke count.
Compose an original viral solo piano score in a soft felt-piano style, one theme that varies across the book, synthesized in code and perfectly sound designed. No synth. Add pencil and paper sound synced to the drawing and page turns.

When the book is finished, render the video yourself. Seed everything so the book is identical on every render, then step through playback frame by frame in a headless browser with a fixed timestep, render the score offline to audio, and mux it all with ffmpeg into an MP4: the complete flip-through from closed cover to the blank last page, 60fps, at [1080×1080]. Recompose the shot for that aspect ratio rather than cropping. Check sampled frames before delivering and fix anything that looks off.