Only the front of the pillowcase is made out of granny squares. I sewed the pillow lease itself using a grey IKEA fleece plaid and I sewed the granny square piece on top. Luckily, our sweet cat is never to shy to help working on a nice and cosy crochet project :) I used a regular IKEA pillow as filling, which I actually also always use to stuff animals and other knit and crochet projects.
As the kids and the animals all plat around with our pillows, I noticed that the pillow case tended to open a bit and show the while stuffing. I closed it of with grey KAM snaps.
I made two of them now, ofcourse the second one also together with our cat: