Yea I actually had some plastic canvas stuff (I think it's used for needlepoint) in my "craft bin". So I cut it the best I could in the shape of the brim, inserted and sewed it up. It's actually very easy once you have a template of the brim.
So I have been on the lookout for a knit beanie hat with a knitted brim but I could never find any instructions on how to knit an actual brim. So this past weekend I sat down and proceeded through trial and error to come up with a decent looking knit brim. Did I succeed? Yes I did....The result is what I call my Brimmer hat.
I love it and I cannot wait to make another. My only disappointment is in my color changes within the hat..they look wonky but oh well everything can't be perfect I rushed through the knitting the beanie. I 'll take my time on the next one.