These Valentine mobiles are suspended from a rope, and are freely moving pendulum-like in the air with random speeds and directions. All the heart mobiles you see are Theme aware so that their fills change when you apply a new Theme. In addition, we used animation sparingly, yet effectively to create this effect – the entire slide uses just the Spin animation and nothing else! And while this entire animated slide was created in PowerPoint 2010, it should work just fine in PowerPoint 2007 for Windows and PowerPoint 2008/2011 for Mac. All animations are set to repeat indefinitely so that the hearts keep moving until you navigate to the next slide.