What to use as amigurumi stuffing if you don't have access to poly stuffing?
Some options:

Cotton Balls - try pulling them apart a little with your fingers to give them more volume &amp; squish.

Old Pillows - cut open an old pillow you don't need for the fluff inside (which is more or less polyfill).

Other possibilities: Roving wool, bulky/super bulky yarn (loosely wound up), microbeads, beans (don't get them wet though!).