During Diwali, the five-day festival of lights, vibrant patterns of all shapes and sizes are created on the floor out of materials such as colored rice, sand, and flower petals. The charming Indian folk art, called rangoli, is usually made near the entrance of a home to welcome guests and deities, and is said to bring good luck on special occasions. Celebrations might be a bit different this year, but buildings will still be brightened by these decorative drawings, twinkling lights, and small oil lamps, known as diyas.