Mouse has asked me to make her a “hat with ears” — when I asked her to sketch a picture of what she wanted, she actually directed me to a picture of a hat from the video game, Tomodachi Life.
And I found a free pattern through Pinterest that will do the job.
Update: The hat was finished and popped into her Christmas stocking. She was extremely pleased, and has been wearing it to school nearly every day. The one difference from the pattern — I doubled it up by cutting a second hat section, then fitting inside the main hat like a lining. This way, the hat was fully finished inside, and the double thickness made it warmer to wear.