This is my FO for a top down baby hat for a 6-9 month size. This was an experiment that worked out well. Did it top down because I wasn't sure I'd have enough yarn.
I knit this on size 8 circular needles using magic loop. I cast on 16 stitches, divided them, and joined them. I kfb all around on the first round to increase it to 32 stitches. On the second round, I kfb all around to increase the stitches to 64. I then proceeded to do a k2,p2 rib for the entire length of the hat. The ribs are nice and straight with no funky increase marks. I will weave the yarn end into the "chimney" on top and draw it tight to finish this off.