My nexus 9 have changed a lot the way I work. As a professor, my time is split between teaching and research. I still use my computer to prepare my lectures and a big part of my coding but, giving lecture, reading papers and taking notes are all done on it.

The combination of termux and SSH means than I can do some dev on it if I have the Bluetooth keyboard with me, it's not ideal but enough to not justify taking my computer with me for one our of coding in the day. The interactivity of being able to move through the classroom and ask students to write answers on a virtual whiteboard keeping the results and going back later to this is invaluable. For a lot of things I do with it, there seems to be only half finished poorly written applications and still it's a big improvement in my work

I truly wait for the day were we have good PDF library app with a reader that can take notes, a good whiteboard app that allow you to have an infinite canvas, ... but even now it changed my way to work for the better.