For USB powered night light ambient light desktop humidifiers for small apartments, useful comparison points include placement, dimensions, power method, capacity, controls and the specific functions represented by the search.
Catalog options relevant to this combination include Wood Grain Ultrasonic Mini Mist Humidifier, Mini USB Desk Humidifier with Night Light, and USB Desktop Humidifier Night Light. Their exact specifications can differ, so use the individual listings for final product details.