Lectrofan White Noise Machine, $38 with $5 shipping

If excessive noise (or utter silence) makes it difficult for you to doze off, this feature-packed white noise machine might be the key to a better night’s sleep.

LectroFan can pump out 10 white noise sounds and 10 fan sounds, all of which are generated dynamically, without any jarring looping. And this particular model also includes EU and UK plug adapters, so you can take it with you when you travel.

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It has over 6,000 reviews and a 4.6-star rating on Amazon and very rarely goes below $45, but you can get one today for just $38 with shipping from Woot. So don’t sleep on it.