Any recommendations? This will just be used as a wall clock to display accurate time (NTP). Doesn't even have to be usable as a 'normal' tablet- my oldhas given up the ghost after several years. It was a Barnes and Noble Nook, and was so slow that it was totally unusable as anything more than a static display.
It can't be a Kindle Fire (the standard cheap Android tablet) because it's too locked down to override screen displays with various information overlays.