Man, I think in my mind I was counting a fan as silence. I guess I've never even experienced trying to sleep in complete silence. And now I'm suspicious that @Mikey the Moblin may sleep in one of those sensory deprivation chambers.
Haha, so the exact opposite of me, then. I used to pass out in the engine room on the ship. Fluorescent lighting and machine roaring all the while. Though I suppose the sleep deprivation at the time helped that along. Now, it's kind of a superpower.
When I was a kid, we moved around a lot. Spent a lot of time in roadside motels. So I find the sound of cars passing by outside helps me sleep. My bedroom window faces the road and I keep it open for this reason. Other than that, sometimes I'll put on a spooky podcast or some kind of...