Tripindi Shradh: Often performed alongside or close to Narayan Bali, especially if ancestral rites haven’t been done for a long time or if ancestors are suffering due to strong attachments (like food, clothing, wealth).
Nag Bali: Sometimes combined (as Narayan Nagbali), this specifically addresses the sin of killing a snake (especially a cobra), which can also cause Pitru Dosha. However, some sources state Nag Bali is primarily done at Trimbakeshwar. Clarify with the Gaya pandit if this is needed/offered.
General Pind Daan: Offerings at various significant vedis (altars) in Gaya like Vishnupad Temple, Phalgu River, Akshayavat.