I have been observing kolu tradition for 11 years. Started with some dolls and photo Frames of god displayed on top of cardboxes. Now we have a 5 step kolu display starting with the top most - Ganesha and Shiva with our Kula deivam Iyyappan. The next step is Vishnu's dashavatharam followed by panchalingam, ashtalakshmi. The final step has people who preached religion and mumoorthigal who composed songs in praise of God. Chettair bommais with fruits and vegetables business depicts business and prosperity. We also have the usual idols of Durga Lakshmi Saraswathi, murugar, krishnar.