I couldn't help thinking of the AlphaSmart[0] while reading this. The writer's primary need seems to be an offline, lasts-forever writing device, so no version

I couldn't help thinking of the AlphaSmart[0] while reading this. The writer's primary need seems to be an offline, lasts-forever writing device, so no version of the AlphaSmart meets all the criteria. But it is (or was) an offline-only device that was limited to writing and a few educational applications. The keyboard was excellent, text could be transferred between device and computer via cable, and the AA-batteries would last for literally hundreds of hours. [0]https://en.wikipedia.org/wiki/AlphaSmart https://en.wikipedia.org/wiki/AlphaSmart