A small DC motor (available online for ~$3), a USB cable (any old one you have lying around), a fan blade (you can salvage one from broken gadgets or purchase it for $2), and some basic tools like ...

The USB charging feature allows you to power the fan from your laptop, power bank, or any USB outlet, while the option to use batteries provides flexibility for outdoor use or during power outages.

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 are handy for anywhere you want some cool air, especially ...