AcousticSheep SleepPhones
If you're like me and have trouble sleeping at night, listening to relaxing music, nature sounds, or spoken-word materials can be a real sleep aid. The thing is, using headphones and earbuds while lying down gets uncomfortable quickly, especially if you prefer sleeping on your side.
This is where AcousticSheep's SleepPhones come in. They're basically a soft fleece headband with two embedded speakers and a cord for connecting to a headphone jack. The speakers won't win any audiophile awards, but the main point here is that the SleepPhones are quite comfortable no matter what position you're lying in.
You can wear them over your eyes like a sleep mask if you need total darkness for a proper slumber, and the speakers can be removed when it's time to wash the band.
There are three colors to choose from—black, gray, and lavender—and each is available in three sizes. Get them on Amazon for about $35-$40.