Remember the failed promise of the Clambook, where one could dock their iPhone into a laptop-like device to get a full size keyboard, screen, and a working trackpad? It was the latest failed iteration of an idea at least as old as 2005 (https://www.damninteresting.com/retired/mobile-phone-as-computer/). Modern phones have a lot of horsepower and storage, it would be amazing if we could latch our phone into a device that makes it behave like a full laptop, on demand. As an author, I would love this, as it would allow me to carry my works-in-progress in my pocket for quick notes and additions, as well as affording the comfort of a full laptop for longer writing sessions. I'll bet Ben can build something nifty in that vein.