An old mobile phone makes the perfect bedsidw clock, music and audiobook player.

Ideally, the phone has an amoled display and an audio jack, but Bluetooth works as well.

Settings / apps suggestions:
https://www.reddit.com/r/androidapps/comments/6wdr3s/tip_send_alarm_sound_only_via_connected/
Sleep on Android or Earphone alarm to send the alarm through the earphone or bt speakers instead of the phone loudspeaker.