Sometimes I forget to go through all the scripts online you can download for InDesign, many of which are super helpful. I recently got an email from InDesign Tips and it reminded me of a great one. For automatically alphabetizing a list go to Window/Automate/Javascript/Sortparagraph.

I used this script when I had a list of over 50 donors for a charity event that I needed to alphabetize, and it saved me a lot of time. A while back, I also found a calendar script online called Calendar Wizard that will create a calendar for you can you customize and edit. You can download it here