Okay I will dig one up from the past, don't have time to do something new before Halloween.
This one I did for another contest on a pen making forum. I did use a scroll saw on it, to cut the bats. I made this pen buy cutting strips of black drain, waste, vent pipe. I glued three strips together, scrolled the bats in it. Glued 3 more strips together and scrolled more bats in different locations. I filled the bats with a mixture of red paint/epoxy. Once it was all cured, I glued the two stacks of strips together, then cut it to the lengths I needed to make the top and bottom of the pen. Put it on the lathe and turned the two pieces. Believe me I was really surprised it turn out as good as it did. I had no idea how the bats would look. It was all an experiment and really fun to do. I won that little contest....! (I think there were about 6 people participating). My daughter stole the pen from me! still drags it out every Halloween to use.