I may be a nerd, but it just seems like circuit boards make everything better. They are all shiny and full of circuits. And when you make dragons from old circuit boards, they look pretty amazing. They probably breathe electricity rather than fire.
These cool dragons were made by Amanda aka TheblueKraken. Each dragon has been made into brooches, necklaces or business card holders that have gleaming (artificial) opals for eyes. She handcuts each circuit board, removes all of the extraneous elements, and then polishes and seals them in clear coat before assembling them with rivets.
I love how she used different circuit boards for the wings, adding some depth. And check out this design C its a red dragon necklace, made from a less common red circuit board and hesonite garnets.