[rwmj]

I turned mine into a little status display, showing today's weather (and a few other geeky things, but that's the main one). The combination of very low power usage and readable e-Ink display is great. Also older models are very cheap -- mine was £50 including delivery.

You can find tutorials for doing this all over the place, eg https://www.youtube.com/watch?v=Oel08SDFyIY (not the particular one I used, but he's done a very similar job to mine).