Here's a breakdown of what would be in a tucker bag:
* Blanket: For warmth and comfort.
* Sleeping mat: To insulate the swagman from the ground.
* Personal belongings: This might include clothes, food, water, tools, and other necessities.
In the song, the "jolly swagman" is implied to be carrying a tucker bag as he travels the Australian outback, searching for work and seeking shelter.
So, when the song says "And he sang as he went, 'I've got a tucker bag', " it means the swagman is proud of his independence and self-sufficiency. He has everything he needs to survive on the road.