I like to walk around different stores looking for things to make pumpkin carvings with. One day I was in the supermarket and they had pig's ears. I guess they are used for dog treats. I grabbed a couple and thought they would look grotesque as pumpkin ears. Also, when halloween was over you could give them to your dog as a dog treat.
I also used a couple of parsnips for horns. In the past, I've used carrots for the horns, but parsnips have a creepier color and are often more pointy than carrots, so I like them.
Perhaps next year I will use some fresh pig's ears, that would be awesome.