I've been going to a lot of music festivals the last few years. It's a bit annoying (for some people) that after a day your smartphone is not working anymore. Some people bring with them a power bank and charge their phones. That's a great solution but it is not very social, everyone always want to keep the energy for themselves. That's when I started thinking about building a solar station for charging many phones at once.
The project has two parts
1. Building the solar panel:http://www.whatimade.today/im-talking-on-sunshine-part-1/
2. Building the charging station:http://www.whatimade.today/im-talking-on-sunshine-part-2/
Live green and enjoy!