I was asked to make a baby blanket for the same cousin that I made the booties and mittens for.
The pattern I used was a simple dish cloth patter that I just used with size 13 needles and chunky yarn. It is just a garter stitch with a simple increase on the second stitch of each row, with a decrease to make symmetrical on the descending side. I used a yarn over as my increase and for the decrease to keep my pattern I used a knit two together-yarn over-knit two together at the beginning of each decrease row.
It turned out super soft and only took about an hour to complete. I decided to make this a “snuggle blanket” instead of a blanket to actually cover up with. I liked this idea for a couple of reasons, first because I ran out of yarn and didnt want to go buy more, secondly, because kids love to carry stuff around and this is pretty portable.