The common activities in organizations are: Rangoli competition, Best Dressed Male and Best Dressed Female contest (traditional clothes), Diya lighting contest, tug of war, poster-making contest, greeting card-making contest, workstation decorating contest, music competition, Diwali songs Antaakshari, Dumb Charades, and potluck lunch. These activities are common and easy to coordinate. Not much preparation is required from the HR front. Do share your experiences with us in the forum after the celebrations are over.
Cheers!
Radhika