Levoit 2.5L Top-Fill Humidifier
Fills from the top, so you're not carrying a sloshing tank to the sink and back upside down. Runs 25 hours on low at 28 decibels — quieter than a whisper, which matters six feet from a crib.

If you want the nursery to feel calm and put-together, this one leans into looks with its Drop Shape design, while still covering the basics: adjustable humidity so you can dial it in, and auto-shut off so you are not up worrying about the tank running dry.
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A nursery where you want the humidifier to blend in, not stand out
the filter is optional, so you have flexibility there, but the listing does not spell out runtime or exact tank size beyond the 1 gallon capacity in the title
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