[sudeepj]

One thing which has helped me is to listen to a podcast or any audio of your favorite topic while lying down. Initially your mind will try to remain attentive but after 20 min or so it becomes harder. After a while you will feel so sleepy that you would want to stop the audio.

[Cistro]

I use an Android app for this called "Simple sleep timer"; I set it to Fade out and close the youtube app after 30 minutes.

I've listened to the episodes of the same production for almost 3 years now; The Ricky Gervais show / podcast. Hilarious and lighthearted, always takes my mind off of anything else.

[dsego]

I fall asleep with podcasts all the time, makes for some weird dreams related to whatever is discussed. But I find the sleep quality is not the best.

[veidr]

Does your podcast tool have an "auto-sleep" function to turn it off after a while?

[foobarian]

My wife puts on some of the investigative TV shows where the anchor has a droning, monotone voice. (Using earbuds)