I started with some brass wire that I bent and straightened into the shape of a communicator. Then I used a special clay sculpting mesh to form the body. Happily, the mesh looks like the mesh screen found on the original communicators, so I left some sticking up for that.
For the body, I used black Sculpey III clay. Once you knead it for 10 minutes, it's pretty supple to work with, and since it's black, I don't have to paint it! I rolled out the sculpey and tucked it around the frame.
I need to keep the brass wire showing, however. That's part of the look.
Here's the finished product.

