Gandhi Maidan is a historic ground and the largest park in Patna. It has been a witness to many important political rallies and ceremonies. You can volunteer here with the park officials to help with cleaning and planting new saplings.
Patna zoo is a popular tourist attraction and is home to many rare and endangered species. You can volunteer to help with cleaning and feeding the animals. Don't forget to visit the White Tiger enclosure, which is the highlight of the zoo.
Mahavir Mandir is a popular temple in Patna and is dedicated to Lord Hanuman. You can volunteer to help with serving food to the devotees. The temple is especially crowded on Tuesdays and Saturdays.
Bihar Museum is a modern museum that showcases the art, culture, and history of Bihar. You can volunteer to help with the maintenance of the exhibits and assist the visitors. Don't miss the interactive exhibits that take you back in time.
If you have more time, you can also consider volunteering at the Nalanda Open University or the Patna Planetarium. A side trip to the ancient ruins of Nalanda can be a great way to learn about the rich history of the region. Make sure to carry sunscreen and water as it can get very hot and humid in June.
For more ideas on things to do in Patna, check out https://booking.tp.st/VhZsadPo for hotels and flights.