In some places in India, it is believed that watching a lizard on the eve of Dhanteras is a good omen or a sign of prosperity.
There is a peculiar custom in Maharashtra to lightly pound dry coriander seeds (Dhane in Marathi for Dhanatrayodashi) with jaggery and offer as Naivedya.
Kubera is worshipped with Lakshmi, the goddess of wealth during Diwali, which is primarily dedicated to her – usually on the Dhanteras day.
That is the reason puja is performed to accounts books and safes on Dhanteras as well as on Diwali day.