Try Google Gravity to get your audience's attention
Yesterday I was teaching a 3rd grade class all about Google Drive and at the end of the lesson I wanted to get their attention without talking. All I did was project Google Gravity on the SmartBoard. It took about 20 seconds and they all had huge eyes and wanted to know how to do it to show their friends and family.
All you need to do it type in Google Gravity in a search bar and it will come up. Google Gravity works as a regular Google page (it is a Google Experiment).
Embedded below is a GIF followed by a 23 second YouTube tutorial.