I've made one piece so far - from scratch - and have also melted down a bunch of beer, wine and whiskey bottles.
The wine bottles come out looking very flat. After they cool down, you can paint them with a silver or gold type of paint and then bake them again. When they are done, the bottle can then be used as a personalized cheese platter - perfect for cutting your favorite cheeses on while you sip on another bottle of your favorite vino.
Champagne bottles tend to work better for this because they have a wider base and flatten better.
The piece I made from scratch is a candy dish modeled after a photo of the Golden Gate Bridge. At least it looked like the GGB before it was fused. Now it's just a multi-colored candy dish. Oh well.