Hi Kate :) Yes, I make them in nickel, bronze and some styles in brass...Brass is the softest of the 3 metals though, so I make more in nickel and bronze.
I have made custom forks in sterling before, and I make other jewelry in sterling, but try to stick to 90% recycled.

I Love those trees! I used to have one that a man I knew years ago made :) I used it for many years as a display for earrings when I did craft fairs, and then it lived in a window for more years until one of my daughters adopted it.