I decided to do one with a marble base and one with terracotta. They were made in the same way. This is mainly a step by step of the terracotta model with a few shots of the marble.
Step 1: What you'll need
A wire coat hanger
A small piece of the thickest leather you can find
Cork would probably be OK
A couple inches of small electronics shrink tubing
Some sort of two part epoxy. Gorilla glue would probably work as well
A masonry bit. I used 1/8th inch but you could use another size if you like
Water to keep the drill bit cool
Optional, drill press. I drilled these by hand but should have used a drill press. It would have been a lot easier and cleaner. I'll show you where I messed up and how I worked around it.