@Nux For many years there wasn't one. When I lived alone, I only went into the bedroom to sleep (there was the book, then the Kindle, on the nightstand). Then, after getting married, when my wife goes to bed, I go too, but it's quite early for me to sleep. For a while I used a tablet, and then I got a TV for which I use as a bigger tablet. It's not connected to regular TV channels and I only use it for a movie or a video before sleeping.