I tear a sheet of toilet paper lengthwise into about 5 or 6 strips
And do that four or five times and put the heap of strips in the cage to be pouched and taken to the nest. Lots of good breeder advice above. When she's had them it's really important to not disturb her, go near her or the pups for a certain length of time (Souffle or Vectis will know how long) or she could cull them, if disturbed. Just put food and water out discreetly.