From a palm-sized travel sound machine to a classic model that’s been around since 1962.

Some use white noise to help them sleep, some to help them focus. Make sure you get the white noise device that fits your needs. Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers ...

As a first-time mom, I tried just about every sleep hack under the sun. Swaddles, bedtime routines, calming lotions — ...