A nightlight plugged into the wall.
<a href="//commons.wikimedia.org/wiki/User:%E1%90%83%E1%93%84%E1%92%83%E1%91%8E%E1%91%90%E1%91%A6" title="User:ᐃᓄᒃᑎᑐᑦ">ᐃᓄᒃᑎᑐᑦ</a>
<span class="int-own-work" lang="en">Own work</span>