During the Credits
There first 2 minutes of the credits of Insidious: Chapter 3 feature the camera flying through and by some generic versions of locations and objects from the film. These include a crystal ball, a candle, a book, an elevator, a bed, a closet, a crack in a wall, an oxygen tank, a wheelchair, a flight of stairs, various hallways and doors, and an air vent. There are no other extras during the remaining 5 minutes.
After the Credits
There is no stinger after the credits of Insidious: Chapter 3.
Songs During the Credits
Excerpts from OST by Joseph Bishara
Special thanks to Dan, Peli, Rob, and Matthew Lowery for the stinger submissions!