Thanks to its flat non-slip base, the portable fan can also be placed on office desks while you’re working and kitchen counters while you’re cooking. And since the fan rotates 360 degrees, you’ll be able to feel a cool breeze from any angle. It has two different speed settings, too, but based on the reviews, you’ll still cool down even at the lowest speed. When the battery runs low (it should last anywhere from three to six hours), you can charge it with the included USB cable through your computer or a portable power bank. The fan can even run continuously on the lowest setting while it’s plugged in to charge. “This might be the most powerful fan I’ve tried,” wrote one shopper. “I was so impressed how quickly it charged and how strong the fan was—I easily could feel it from 5-6 feet away, [and] when put in front of my face, it [feels like when] a hair dryer [is] on the high setting.” To buy: $21 (was $30); amazon.com. Even though the SkyGenius fan is affordable, customers say it’s still “worth every penny.” In fact, one person updated their review four years later to note that it’s “still running strong.” “This little fan has far exceeded my expectations,” another customer said. “The battery that came with it will last an easy two to three hours on high. It moves plenty of air and keeps a little one cool during those hot days. We use this all the time at the theme parks… If I could give this thing 10 stars I would. It is durable and [it has] also survived multiple drops off of the counter.”