Foldable Solar LED

 

Foldable Solar LED, USB Charging Lamp for Night Markets, Home Emergencies, and Outdoor Adventures

Promising review:  "Perfect for camping. It easily charges wit the sun and will last all night if you turn it on low for a flash light. It's very lightweight and easy to carry it anywhere. It has a hook and easily attaches to the ceiling to provide a hanging light. The battery life depends on the mode and brightness but typically lasts a while" - Bright 

Get it from Amazon for $21.

Get it from AliExpress for $13.