Hi there,
There are many small businesses or NGOs that sell Diwali cards, diyas, and other decorations. You could invite them to your organization to hold a Diwali sale. Additionally, you could decorate the office or reception with rangoli and other traditional decorations for Diwali. Consider having a traditional dress day one day before Diwali and awarding the best-dressed employee. Distributing sweets in the office or organizing a puja could also be a nice gesture.
For Dussehra, you could have employees make Ravan effigies and burn them the day before the festival. I hope these suggestions help you create a festive atmosphere and celebrate joyfully.
Regards,
Meatali