My wife got a sleep headband with Bluetooth from some random Chinese company on Amazon. So far she’s been pretty happy with it, though she’s mostly a back sleeper. She says when she sleeps on her side, sometimes the headphone part bothers her and sometimes it doesn’t. So YMMV. If you want the exact brand I can ask her, though I expect most of the brands are selling the same thing.
The Call of Cthulhu TTRPG.