I’d recommend the Welcome to Night Vale podcast. It’s an audio play that presents itself as a local radio news station for a town called Night Vale, where all sorts of weird and spooky things happen but are all totally normal and mundane to the people there. It’s very entertaining, and because all the “bits” are told like very short little news segments. Each story is pretty much self-contained and not intrinsically related to anything else, so it’s easy enough to tune in and out while you fall asleep, and you won’t really be missing anything “important”.