Reviewers say this energy bank can run for over 24 on a single charge, to keep your devices juiced up in an emergency.

What you need is a fan that is powered through USB. But you don't have to work in an office to get the benefits. These portable USB fans ... value and longevity. Best of all, most of our favorites ...

and see which features fit your needs best. If you are looking for a portable air conditioner for a small space, this guide has some of the best options, from Evapolar and Whynter to other top brands.

When you use links on our website, we may earn a fee. Want to beat the heat without paying for central air? A portable air conditioner keeps you cool when outdoor temperatures start rising.