Brass Goggles continues their relentless assault of cool stuff we could never afford by offering up a link to The Necropathic Spectregraph, which is apparently done by the same cool frood who handled stuff like that Lovecraftian explorer box we mentioned earlier.
Included in the spectregraph are:
ouija board and planchet, instructions, protective goggles (!) extensive notes, a severed tiny human hand, for corporeal manifestation, a prayer book, photographs of previous ghosts obtained using the necropathic spectregraph
Considering the device is "designed for the purpose of obtaining, containing and experimenting on spirit entities," you've got your steampunk containment system, now all you need are some steampunk unlicensed particle accelerators.
Steampunk Ghostbusters. I want to see those at DragonCon. Get on it!