I know I did this post fairly recently, but I am doing a double in-service for my county's social studies chairs tomorrow so want to put this up for them (and you).
As a chair and teacher I use Google Forms all the time. For example I sent the members in my department one on Friday to get their choices for classes they want to teach next year. Each month I also use it for our student of the month. When I started my new class for teachers I used it to get their e-mails which I pasted into a folder to share with them (you could do the same for your students). In short, think of anytime you need to collect information from a group of people and using Google Forms (see video above for how to do it) and you can do it instantly. By the way if you have your recipients put their last name first, then you can easily alphabetize it.
Above and here is the video how to and if you prefer the written word, you can go here.