Reddit mentions of SUAOKI Solar Charger 60W Portable Solar Panel Foldable for SUAOKI/Enkeeo/Goal Zero Yeti/Webetop/Paxcess/ROCKPALS Power Station Generator and Laptop Tablet GPS iPhone iPad Camera

That fan is pretty big. Might be better off to send something like this: https://www.newegg.com/Product/Product.aspx?Item=9SIA4M540J4841&ignorebbr=1&nm_mc=KNC-GoogleMKP-PC&cm_mmc=KNC-GoogleMKP-PC-_-pla-_-Fans-_-9SIA4M540J4841&gclid=CjwKCAjw3rfOBRBJEiwAam-GsDsOnkscCXpE8V_GHuxwtDWYpkbYqvLXfxgWZ7BQAPY7KwVNn0S5jRoCge8QAvD_BwE&gclsrc=aw.ds

Edit: the box fan you mentioned uses 120w and needs an inverter to operate vs the camping fan above is 12w and works on 12V DC. simpler and easier to get going with less load, though likely less air movement.

or some other 12V camping fan.

as for the solar, look for something like this: https://www.amazon.com/Portable-Foldable-SunPower-Smartphones-Batteries/dp/B07432VBX8/ref=sr_1_4?s=electronics&ie=UTF8&qid=1506716539&sr=1-4&keywords=60w+camping+solar

it has clamps to charge a battery will fold up for your shipping and is easy to set up.

Not directly that I know of, but you just plug the solar panel into something like an XTAR VC2 and away you go!

I use this panel because I got it on sale for prime day.

There are bigger ones (not by Anker though)

Some links after a quick Amazon search:

• https://www.amazon.com/GIARIDE-Foldable-Sunpower-Portable-Notebook/dp/B0713YKWCL/
  
• https://www.amazon.com/SUAOKI-Charger-Portable-Foldable-Efficiency/dp/B0752TQ5Y7/
  
• https://www.amazon.com/Charger-Sunpower-Mono-Crystalline-Portable-Cellphone/dp/B07432VBX8/

I'm looking at this combo...Battery & Charger
But for the same price the deWalt one looks like it has more juice