Use diyas (oil lamps) to create a centerpiece for a dining table or mantel using several diyas arranged in a line or circle. You can also use diyas to add ambience to a room by placing them on shelves or tables in strategic locations. Another option is to hang diyas from the ceiling or on the wall or place them on your front porch or around the perimeter of your home during festivals. Experiment with different arrangements and groupings to find the look that best suits your home and personal style.