There are several case studies and examples that you can study for Paper I of the UPSC exam. These case studies provide valuable insights into various aspects of governance, polity, and public administration. Here are a few examples that you can consider:

1. Kerala's Model of Development:
- This case study focuses on the socio-economic development of Kerala, which has achieved remarkable progress in several key indicators such as healthcare, education, and quality of life.
- Key points to study include the role of decentralized planning, emphasis on human development, and effective implementation of welfare schemes.

2. Self-Help Groups in Andhra Pradesh:
- Andhra Pradesh's SHG movement is a successful case study of empowering women and promoting entrepreneurship at the grassroots level.
- Understanding the structure, functioning, and impact of SHGs can provide insights into poverty alleviation, women empowerment, and rural development.

3. Bhilwara Model of COVID-19 Management:
- The Bhilwara district in Rajasthan successfully contained the spread of COVID-19 through an innovative and proactive approach.
- Key points to focus on include early detection, aggressive testing, strict containment measures, effective communication, and community participation.

4. Aadhaar and Direct Benefit Transfer (DBT):
- The Aadhaar-enabled DBT system in India has streamlined the delivery of various government welfare schemes, reducing leakages and ensuring targeted benefits reach the intended beneficiaries.
- Studying this case can provide insights into the use of technology in governance, financial inclusion, and the challenges associated with data privacy and security.

5. Panchayati Raj Institutions in West Bengal:
- West Bengal's experience in implementing and strengthening Panchayati Raj Institutions can be studied to understand the role of local self-governance in rural development and grassroots democracy.
- Key points include devolution of power, capacity building, social inclusion, and the role of PRIs in service delivery and participatory decision-making.

These case studies provide practical examples and real-world experiences that can enhance your understanding of the concepts and theories covered in Paper I. Remember to analyze these cases from different angles, considering both their successes and challenges.