A while back I made a sweater for him (this was before he arrived) and I thought a matching hat would be just the thing. I even had the yarn leftover, so it would be a perfect match. It took me a while to finish it, but I did finally do the propellers (fiddly, but really short work) and mail it off. The parents took photos and emailed them back!
Pattern: Autogyro. Be sure to get the errata on the Ravelry page:
Erratum
Rounds 15 and 16 of the propeller section should read:
Round 15: K1, k2tog, k2, ssk, k1 twice. 12 sts.
Round 16: K1, k2tog, ssk, k1 twice. 8 sts.
Needles: Size 4 and 6, 16" circular (Susan Bates, I think) and dpns, I think Clover/Takumi
Yarn: Cascade 220 Superwash. Yep, it's washable!
Mods: I didn't do the turned hem with elastic - I did a picot cast-on for stretch and 1x1 ribbing instead. Then I replicated my stripe sequence from the sweater, in reverse. I tried out slipping stitches to avoid jogs as described by TechKnitter here. They look okay in the photo, but at the time I still wasn't too satisfied.
And here is the little scholar wearing the ensemble, studying to be a Cal Bear like his dad:
