As promised, here are the details of the two secret hats.
Double-Knit Snowflake Hat
Yarn: Valley Yarns Deerfield. Two balls, one in Burgundy and the other in Frost Grey.
Pattern: Alison's Doubleknitski Hat.
What I changed: I modified the pattern for a different gauge and slightly different measurements. I also added some colorwork by using five, self-designed snowflake charts. Johanna oh-so-kindly lended me her Fair Isle pattern book to me for inspirational purposes. It worked. I had a lot of fun with a pencil and some graph paper.
Yarn: Valley Yarns Amherst. A smidge more than two balls of Burgundy.
Needles: US8s, 16" circulars and DPNs
What I changed: I modified the pattern with the Wavy Cables motif that I used for the scarf. Instead of a four-stitch cable, like the scarf, the hat uses a six-stitch version.