You know the feeling – you really need a good night's sleep after a busy day, but your mind keep racing and for some reason you just can't settle down and switch off. It's something that's happened to me a lot over recent months, and I'm not alone; sleep problems have been common during the pandemic , even in people who don't have the virus. One thing that often helps me drift off is some ambient ocean noise from the Rainy Mood app on my phone (with the seagull effects turned off), but playing it over my phone's speaker risks disturbing my husband, and sleeping with headphones is just plain uncomfortable. There are alternatives, like the SleepPhones from AcousticSheep, which are essentially tiny speakers built into a soft headband, but wearing anything around your head at night takes some getting used to, and when you're already stressed, that's the last thing y