On paper, e-ink displays are amazing for hanging up on a wall. They have a paper-like texture to them that lets them sit alongside posters and photos on your wall without looking too tacky. But doing so creates a problem: how do you keep it powered without having cables dangling everywhere? Well, one tinkerer got to work squeezing the Pimoroni Inky Impression driver into a Pi Pico Plus 2 W so they could run it off battery, and the source code is available for all to grab.