I came across this on Pinterest today. I have a pattern for the crochet version of this type of bag, but I really like the knit version as well!
You can find the pattern here: windmill bag | it’s peanut butter yelley time. . .. There is a nice picture tutorial, up to, but not including the i-cord bind off.
Looks easy enough . . . it’s the getting-around-to-it part I have trouble with.