Thing 18 -- online productivity tools

I played around with Google Docs this past school year and found that I really love it. I sponsor my school's chapter of National Honor Society (NHS) and I am continually planning community service projects and signing kids up for work shifts. One main problem I have always had is kids signing up and then needing to change shifts, kids that try to come by my room to sign up and I'm running errands and they can't, or kids that decide after school is out that they want to volunteer. I created a Google Docs sign-up for every event and made it public and available for kids to change. It worked out so nicely. I like the way it can be accessed and updated by multiple people.