Letter Pop is an online substitute for MS Publisher that creates newsletters, announcements, flyers, and more on the fly. That means you can bring this up with your class and create at the board. Better yet, practice some on your own, and then have the children come to the board and create something themselves. Perhaps you are doing something neat and would like to share with other classes- Maybe your group has been working hard and could create information to send home to parents- not your note, but their own announcement of what has been accomplished.
Don't be afraid to try this... Here is a short video clip of what the site looks like and some of what is available. Hope you will try adding this to a lesson soon. Whatever you do create can be saved into a flipchart as a lesson/example for others who may want to try after they see your groups' creation.