So get out there with your cameras and signs and get some awesome images that will make people get active. The more creative the better. Just remember that anyone can do this, you don't have to be artistic or a photographer, just see what you can come up with. Once you have come up with and idea and created your photo send it to me* and I will post it with any message from you about the cause you want to raise awareness about. Go have fun!
*You can email me your message and the picture here: email@example.com