Yarn: Berroco Vintage (blue), and Cascade 220 Superwash (red and white). I did use up almost 2 balls of the blue, and the red took most of 1 ball of Cascade. The whites can be done easily with just scraps of yarn.
I honestly don't know how I feel about this pattern. They did come out looking right, but everything about making them felt cobbled together. It didn't feel like it could possibly come out looking right, yet it did. Is that a good thing? Maybe?
Well, here are some of my big notes. The original sole is not thick enough, in my opinion. It is knit with the yarn held double, but still feels a bit floppy. My dad has a tendency to eat through his slippers quickly, so I thought I'd go ahead and make a second sole. My second sole is removable, and so can be replaced, if he wears through them. The ears are the same size for all 3 sizes. This means they seem a little tiny for the largest size, IMHO. The same can be said about the teeth, but each size uses a different number of teeth, so that is adjusted for there.
My last aside is that I"m terrible at embroidery! Maybe especially so on knitted fabric. Not a single one of my eyes looks even remotely like another. :o/ Oh well. My dad said they were very warm, and so it looks like they are good for their purpose. :o)