As Winnie is showing in the above photo, that's more or less how much rags goes into each rag pet, in addition to a big lump of cotton batting. It's about one single bed sized sheet or half of a regular sized duvet cover, ripped to shreds. The older and more worn the sheets the better, I prefer the ones that are so worn you can almost see through them! They're so lovely and soft and they make the best stuffing. I get a lot of my old bedclothes from family and if I'm running short, I nip to the flea market for more. If the sheets have a very cool pattern, I save a bit to use for rag pet clothes.
I do most all of the ripping on the balcony, since it makes a lot of dust and doing it indoors just means more dusting and vacuuming afterwards. I'd love to have some machine that'd do the ripping for me, since it's pretty tedious work to tear a big sheet to shreds and I'm pretty sure my lungs disagree with all that dust too. We did try using a paper shredder, but since fabric isn't as stiff as paper, it didn't quite work. I've also tried to find "shoddy" (shredded recycled fabric) online, but the smallest lot I've managed to find was 5 tons, and while it'd be super to have that much stuffing at hand, I'm afraid we don't have anywhere to store it! If anyone should know of a place that sells shoddy in small lots, I'd love to hear of it.