Going for the "Geared" challenge level (5 books) since I will be participating in other challenges next year.
1. The Anubis Gates Tim Powers
2. Boneshaker Cherie Priest
3. Soulless (The Parasol Protectorate) Gail Carriger
4. Perdido Street Station China Mieville
5. The League of Extraordinary Gentlemen Alan Moore
I do enjoy steampunk but haven't read enough of it. May add to the list as I go along :)