For Zaylee's cat costume, I crocheted a long, fuzzy tail and sewed it onto the back of some brown sweatpants. Besides the ears, the tail is her favorite part of her costume, and mine too! It's a long tube of double crochet, in Lion Brand Homespun.
Next I crocheted a large oval. This I hot-glued onto a brown turtleneck to act as the fuzzy belly. Add the ears and some kitty makeup, and the cat costume was complete.
For Thomas' bat costume, wings were an absolute necessity. I used the basic instructions given at Alphamom (which I found on Pinterest, and can thus link this post to the pin-did challenge at The Modern Marigold, yay).
I did alter it a bit - I didn't use boning because they didn't have it at Wal-Mart when I did my quick costume supply shopping trip. Instead, I made the wings out of two layers of fabric, one of which was somewhat stiff, and that way the wings supported themselves and boning was unnecessary. Also, to attach the wings to the shirt, I cut out the side seams and resewed them with the wings, so now they're actually "built in" to the shirt. Again, I used a basic turtleneck and sweatpants as the base for the costume.
Ears and makeup, and my little bat was ready to fly.
For Audrey's butterfly costume, all I had to do was add wings to a black turtleneck and pair it with black pants. And make an antenna headband that she wasn't too fond of wearing.
The wings are just two layers of fabric, with some interfacing to keep them stiff. I used a zigzag stitch to emphasize the shape of the wings. Then I sewed them onto the shirt. If I had it to do again, I would have just glued or pinned them on, because getting the shirt up onto the sewing machine enough to sew the top of the wings was really hard! And I would have used a bent clothes hanger or something to help the wings keep their shape - even with the interfacing they flopped forward too much and didn't really hold their shape well. But still, for a last minute project, it turned out okay.