Diyas are small oil lamps traditionally made from clay, commonly used in Indian culture, especially during festivals like Diwali. They are filled with oil and have a cotton wick that is lit to produce light. Diyas symbolize the victory of light over darkness and good over evil, making them an important part of various religious and cultural celebrations. During Diwali, people decorate their homes with diyas to create a warm and festive atmosphere. The soft glow of the lamps is believed to invite prosperity and happiness. Diyas can also be used in daily rituals and prayers, serving as a reminder of spiritual illumination.