Bonam can be a cooked rice with Jaggery and milk prepared in a fresh brass, earthen pot decorated with neem leaves, turmeric and vermilion (Kumkum). A lamp is lit in addition to the pot and is called Bonam Jyoti. These murtis had been worshiped by troopers ahead of gonna war, https://hanumanmandiradelaide.com.au/lord-shanidev/