Polymer clay would be a good place to start. You can mold whatever you like (that is within the realm of your ability), stick an eye-pin in it, and then hang it by a ribbon. Personally, even with my limited artistic ability, I think I could make (very round) bats, spiders, bones, coffins, fleur dis lis, headstones, keys, icicles, and more.
If you're the type of person that has CDs of your favorite music hanging around, string those up on the tree with ribbon. Best of all, they reflect light from string lights so your tree will look twice as sparkly. Besides, since you don't have to punch a hole in the CD to hang it, you can take the CD down after you're done with the Christmas season and keep it year round.
To use up some of your ribbon/lace collection, start tying them in bows around the tree branches or onto smaller ribbons for hanging. Or, you can them around the tree as a garland if you have that much ribbon.
If you saved any small wooden shapes from craft stores around Halloween time, now would be the time to slap some paint (or marker or glitter or Mod Podged scrapbook paper) on them, punch a hole through them, and hang with a ribbon. If you want to you can give them some Christmas style or just stick to plain Gothic (although I think one of those bats painted with red and white stripes would look just darling.)
If you prefer the traditional round Christmas ornaments but hate the usual color schemes (and the exuberant prices of non-traditional color schemes) you can pick up some plain ornaments and have at them with paint. There are lots of ways you can do this, from spray-painting the interior of clear balls to swirling paint in circles and even to painting patterns on the outside. Once the paint is dry, feel free to decorate the exterior with sequins, beads, or glitter.
Lastly, if you're interested you could take clear Christmas ornaments and fill them with goth-y things. Stuck for ideas? Here are some of mine:
- Black feathers
- Fake Pearls
- Dried/fake flower petals
- Small animal bones
- Fake spider webs from Halloween
- Shredded pages of Goth novels
- Rolled paper
- Pieces of fishnet
- Rocks (insert GENTLY)
- Halloween confetti
If you all are celebrating Christmas this year, how do you plan on decorating your trees?