A friend posted a link to a crocheted version of these onto my facebook; I figured anything crochet-ers can do, knitters can do better. And so these were born… (aptly, given I was watching Big Bang Theory at the time). No copyright infringement intended. Shaving eyebrows not advised.

Let me know if there are any problems with it!

EDIT: for the second ear, work the same except at row 7: k4, kfb, kfb ; and at row 11: kfb, k2, kfb, k4