Yogasleep Dohm Classic White Noise Machine

The original is sometimes still the best answer, and the Dohm is a good argument for that.

First made in 1962 and functionally unchanged since, it produces real fan-generated white noise rather than a speaker imitating one, fewer parts, less to fail, and nothing to update. Two speeds adjust the tone and volume by hand, and the whole thing is simple enough to pack for a trip without a second thought.

Built for anyone who wants their sleep sound machine to actually be evergreen, not just marketed that way.

Available in two colors, each linked directly to that exact listing on Amazon: Black ($49.94) and White ($49.99).