combine this project (DIY eink screen): https://www.reddit.com/r/eink/comments/ljq262/epdiy_eink_pc_...
with this latest release (Raspberry PI alternative board which supports eink): https://www.makeuseof.com/quartz64-e-ink-sbc/
and this solar powered, power first open source (eink) laptop project: https://hackaday.io/project/177716-the-open-source-autarkic-...
Vola!