Further thoughts on beanie strategies: Cast on with a contrasting color and knit the first row with it (1 garter ridge). Change to
Main color. Knit the first ridge of each wedge with the contrast yarn. You'll get sort of a divided pie look.

Or try doing the contrast for one ridge (two rows) and then switch yarns AND switch to stockinette (your hat will be a big wider this way), except for 5 or so stitches on the edge which you should do in garter stitch for ribbing.

Make it even bigger so it fits an adult. Maybe 45 stitches? You'll need a few more shortrows too!

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