PowerPoint comes with dozens of free shapes; circles, stars and even smiley faces are only a few clicks away. If you don't find a shape you like, draw your own using the built-in free-form drawing ...

You can't have an engaging presentation without an artist's touch. Imagery is not only eye candy for your audience, it's another way for them to learn and understand. When you purchase through links ...

If you want to use PowerPoint's capabilities to illustrate how two or more data points compare in magnitude, it might be appropriate in some cases to use proportional shapes to make the comparison.