Here’s a page with a terrific selection of paper models of steampunk / Space 1889 / Victorian Science Fiction iron clads and ether flyers
steampunk
Scarf Heroine — Cartoony Steampunk Skirmish Game
Scarf Heroine is a free print-and-play skirmish game with a cartoony steampunkish vibe. There are rules, order cards and cute cutout figures, all free for the downloading and printing.
Wolsung Steampunk Skirmish Rules
Wolsung is a nice looking set of free wargames rules for skirmishes in a steapunk setting.
Update: The previously free rules now are published for sale.
Machinations Steampunk RPG
Machinations is a simple steampunk RPG. From the author’s description:
Welcome to the Eternal City, the home of the Machinations RPG. Take on the role of an Adventurer, an Alchemist, an Artificer or even a deathless Automaton. Band together with others to form a Free Company and then hire yourselves out to perform acts of sabotage, espionage, assassination, extortion, blackmail or plain old robbery. All in a world a short step from our own, where reason has been lost, empires exist to be built and strange technology dominates all walks of life. It is a world of sinister intrigue, awful power, terrible events and dark portents. There is also beer, song and glory
Steampunk Mecha Paper Models
The Toposolitario site has a nice selection of paper models of mecha suitable for steampunk, pulp or wierd WWII games.