Lighting the lamps symbolizes the triumph of good over evil, and Diwali is also called the festival of lights.
Some of these clay lamps are beautifully decorated and would make wonderful year round decorations. As an example, this is a hand-painted diya from MyGranary.com
For a fun family activity, visit DLTK’s tutorial on how to make a diya out of clay. You could add paint, sparkles or small mirrors to decorate it once it sets.
Happy Diwali to those celebrating on October 26th!