https://www.amazon.com/OPOLAR-Operated-Rechargeable-Portable-Personal/dp/B01DZYUL6A

Small cheap micro USB fan.

Runs on an ecig battery (included)

Moves air like you wouldn't believe.

Great for in the venue or your tent!

https://www.amazon.com/OPOLAR-Operated-Rechargeable-Portable-Personal/dp/B01DZYUL6A

I gotchu fam.

This thing has gotten me and my gf through three years of festivals.

Runs on an ecig battery, which it comes with, charges on micro USB, will work on pass through (workswhile charging so micro USB power banks can add life or just carry spare ecig batteries. Honestly it lasts for an amazing amount of time on one battery)

And I've compared it to the big d cell ones you commonly find and it moves air just as well if not better, despite being half the size.

Cannot recommend enough

When we aren't raving it lives in my gfs purse and she loves it.

I've been meaning to buy another but the one has been all we really needed.