This year I'm going to use Sign Up Genius for conferences and volunteer activities. I'm hoping that it will be easier to sign up for activities. It may save you some time when you're choosing dates if you set up an account with Sign Up Genius before we meet. I will activate the links right before curriculum night begins so that you can get your first choice of dates and vounteer opportunities. I'm not 100% sure that you even need to create an account.
I've not done this before so I'm keeping my fingers crossed that this works. ;)