To buy: $28; amazon.com. “​​This works really well in our bedroom, and the footprint is just small enough to sit on our smaller nightstands without being too cumbersome,” wrote one of the humidifier’s 7,400 five-star reviewers. “Great capacity; [it] lasts a long time with minimal noise… And the press-and-hold feature to turn off the lights, regardless of setting, actually makes it superior [to] all other devices of its kind.” The humidifier is easy to use, since it’s powered by a USB cord and can be controlled via a single button. The cool mist gadget also has dual mist modes (continuous and intermittent) that are “able to change the environmental humidity in minutes,” according to the brand, as well as an automatic shut-off feature for safety reasons. “Love this humidifier! It’s the perfect size for small spots: great for a desk, nightstand, end table, etc.,” added another shopper, who echoed the ease of using a single button to control the device. “It’s very simple to use: Just fill the base, place the top on, and plug in the included power cord. Push the button once for a continuous mist, a second push will give you an intermittent mist, and a third push will shut the device off.” They added, “Overall, I’m very happy with this humidifier!”