[Jonatron] found a Nook Simple Touch in his drawer – with its E-ink screen, wireless connectivity and a workable Android version, this e-reader from 2011 has the guts for always-on display duty.

except for suboptimal library book support I've been using e-ink e-readers since the beginning, and the Barnes & Noble Nook GlowLight 4 is as good as it gets for comfort and reading usability.