I have some lovely Noro Kureyon in my stash and decided to make some of Midnattsol's slippers with it. You can see the pattern on her blog: http://hurpeknagg.blogspot.com/
Her pattern is for hand knitting, but since it's just a strip of rectangles, it's easily (and really quickly) done on the machine. I love the colors of Noro and they slide into one another even more deliciously when you felt the yarn. I used: Silver Reed midgauge, T10+, two skeins of Noro Kureyon, one for each slipper. Each rectangle was 24 stitches x 32 rows. These fit a women's size 9 American with socks on. Since I had to run the slippers through the wash four times to get it them to felt down small enough, if I were to make them again I'd do 22 stitches x 30 rows, or even a bit smaller.
Some hints if you want to make these slippers with this yarn: Noro is really "sticky" when used on a knitting machine so a lot of weight is required. Since each rectangle is not distinguishable from the next, run a strand of red yarn through the stitches after each rectangle is knit so you know where to sew the rectangles together. Unless you are a genius at origami, you should use 7 different colored yarn markers in the spots specified in the pattern to aid in sewing up. Finally, use a seaming technique that butts the rectangles together with a really flat seam. Doesn't even matter if it is beautiful. What matters is that it is flat so that when it felts, there isn't a bunched up seam. Pull out the red yarn at the very end of seaming. One thing I did which varies from the pattern is that I crocheted a single crochet row around the opening (after seaming is done) and then did a second row of backward crochet, also called a crab stitch. I thought it would add some stability to the cuff, but it wasn't really necessary.
This is the sole of the slipper. I kind of wish these colors were topmost, but it's almost impossible to predict.
I'm wearing them as I type. It's 11 degrees F outside and I'm toasty inside. I still have 4 skeins to use up. I think I'll knit a cowl but won't felt it. Stay tuned!