The Diwali puja box, also known as "puja thali," holds great significance during the Diwali festival. It contains essential items like diyas (lamps), incense sticks, sweets, flowers, and idols of gods. These items symbolize light, purity, and prosperity. Lighting the diyas signifies dispelling darkness with knowledge. Offering sweets and flowers symbolizes sharing happiness and love. The puja box represents the spiritual preparation for Diwali, fostering a sense of unity, gratitude, and devotion among families celebrating the festival.