Rangoli is done by women to bring good luck, it is generally practiced during festivals, marriages, celebrations and gatherings.
In olden days the base material is usually rice flour and for color they have used sindoor, turmeric and other natural ingredients for various hues. Recently these have been replaced by chemical colors.
Rangoli designs can be simple geometric shapes, deity representation, peacock, fish, flower or petal shape. These Rangoli that I have posted are made using chemical colors. I am not well versed with these designs my house keeper use to do it for us.
Major symbols used in Rangoli are lotus flower (which has a lot of spiritual significance in Hinduism), mango, leaves, fish, deepam (diya / lamp) , parrot, peacock, and swan.
The Flower rangoli designs in this post are made by one of my best buddies Vidya lakshmi.Have you tried Rangoli ?