Are you looking for a fun way to take attendance? Save file on your computer. Fill in the name of each student in a "callout cloud". Move the clouds around. Delete clouds if you don't need them all. More than 20 students. Copy and paste another cloud. It's that simple!
For use through the SmartBoard. Students simply tap the cloud with their name on it. The cloud and name create a 'whipping' action and disappear.