chubbychicocharms.com has lots of really cool Halloween charms (vampire fangs, cemetary gate, etc.), but I don't think they have anything specifically "Twilight". You could always do a search...I'm sure someone makes them!!
I got some from a school/art supply place called Nasco. They are all brown, but since I wrapped them in something else, it didn't matter. I know that Tandy leather sells them too, but I don't remember the colors. I would do a search under "camp crafts" or something like that. For some really cool, but high-end, cuffs, check out ohlinda.com. AWESOME!
Go to a website called paperstudio.com, and they sell lots of metal pendant trays, etc. You could trim stuff down to size, then use Diamond Glaze, resin, or melted UTEE to cover them. Sometimes you can go to a store & find the clear page pebbles too. Oh, I just remembered, you can also visit bsueboutiques.com too. They have lots of stuff you can use, and they are not expensive. Sometimes slow on shipping though, but very good quality.
I had trouble with printing stuff with an inkjet too, but then I invested in matte presentation paper. After you print, you have to let it dry between sheets of paper for 24 hours, but I think you will find the quality is excellent. It prints cleanly, and I've actually been able to make the Omnigel transfers from them. See if you can get a sample from Epson, HP, etc., and give it a try! Let me know what you think. (Of course, I might get different results because there isn't any humidity here!)