Boneshaker by Cherie Priest
What do you get when you cross steampunk technology with a zombie crisis in Civil War-era Seattle? Cherie Priest's rollicking, goggle-filled adventure story. Reviewed here.

$10.87 from Amazon

Leviathan by Scott Westerfeld
In an alternate World War I, monstrous machines battle against weaponized, biologically engineered chimera. Reviewed here.

$10.79 from Amazon

Dr. Grordbort's Rayguns
They aren't functional, but these steampunky pistols and rifles will look great above your fireplace (or steam engine).
Various prices from Weta

Steampunk Trinkets and Artwork
We mentioned this last year, but it still holds true: you can find great little steampunk pieces by searching for "steampunk" on Etsy.
This brooch is $55 from seller nouveaumotley