@CalamityJane,
I was looking at the cake photo you linked and started thinking....
Could I make a python using magic shell (you know the ice cream topping that hardens when it gets cold)?
A python has pretty free form markings....
I found a recipe to make it but I can't seem to find out if it has to hit something very cold to hold it's shape. I know that once it hardens it stays hard (but I don't know if it "sweats").
I wonder if I could put it all together in the garage where it's cold.
At least magic shell tastes good!