So we went batty. Lee quite literally.
I drew my inspiration from here and simplified it even further. Just some fabric cut with pinking shears to avoid fraying or heming and sewed onto a black, long-sleeved tee. The ears are felt with a loop in the bottom so they would slide over a headband. Not to brag, but I was pretty impressed with myself.
Along with the theme of "things with wings", I picked up Zoey a butterfly costume at Target. I don't think she was as excited about her costume as I was about mine.
But she was excited to be reunited with her ex-roomies Simon and Jenn. (I was too.)