I was watching the candy castle contest on Food Network and the one gal used a stencil she pressed onto the fondant or buttercream to create a stone pattern. Any idea where I can find one of those? I am going to be doing a castle for a wedding cake in Feb. and it sure would be helpful!
There is also a place called cakesbysam.com that has the brick and cobblestone pattern (and several others). I just ordered the cobblestone for making my neice a castle cake. HTH
I got mine from countrykitchensa.com. They came in a five pack with cobblestone, brick, wood, horizontal lines. they just came yesterday - can't wait to use them!
That was the late Susan O'Boyle Jacobsen who used that technique. The tool is called an impression mat.
Theresa 
I found a package of impression mats that I used for my castle cake in the polymer clay section at our local Michael's.
I found those too KrazyKross! I haven't used them yet, b/c the cobbles were too small for what I needed. There was a cool wavy design in that pack too - have you tried it?
Have you tried the hobby stores that specialize in trains? That's where I got my bigger ones. They're sturdier than the ones they sell for cakes, too!
Theresa
You can buy stencil almost anywhere.. I got a few of them from
Michaels, walmart and JoAnn Fabrics. You don't have to buy at a cake supply store.
Stencils are cheap. You just have to find the design that you want.
Stencils are so easy to do.. I did this the first time I used stencil and I love it. I will do it more.
Quote by @%username% on %date%
%body%