Okay, this is the last thing in December, I promise! I found these slipper bottoms at my favorite knitting store, ImagiKnit. You knit the top and sew it onto the bottom. It's the kind of project I like because the stitches change frequently, there is a lot of shaping to it, and it's so useful when it's done. Of course, then you have to make the mate. Boring.