The SleepPhones seems interesting... I hadn't seen them before. Just curious if you use the wired or wireless version?
I'm a big fan of SimplyNoise / SimplyRain, and also have a little one-line bash script colored noise generator that I use these days [0]. ASMR seems like a similar idea.
I wear these each night and listen to relaxation videos such as ASMR [0]. Many people in that community use these.
[0] https://en.wikipedia.org/wiki/Autonomous_sensory_meridian_re...