Bonam can be a cooked rice with Jaggery and milk prepared in a new brass, earthen pot decorated with neem leaves, turmeric and vermilion (Kumkum). A lamp is lit along with the pot and is called Bonam Jyoti. These murtis were being worshiped by troopers just before about to war, https://hanumanmandiradelaide.com.au/dr-shri-shyam-sundar-parashar-ji-event/