For the arm guard, I sewed a few straps of felt onto a shaped rectangle and called it good. You can find how to make the ears, and the quiver on this blog. For the glove, we found an old winter glove without a mate and cut it.
For me, I decided not to be a witch again this year and found some things in my closet to throw on. The necklace I made a while back. The vest I found at Salvation Army a few years ago to go with my Steampunk fairy outfit for the Witches Ball.