Since they're nearby an Artificer's place, I'd suspect constructs....
And not just any constructs....you know the goblins from World of Warcraft at all? Little green guys, great tinkerers. They make constructs themselves, and update 'em. I'd expect some goblins to have a higher-than-usual Int and have taken up the mantle of the Artificer, or perhaps some other arcane spellcaster. Goblins are about as smart as your average human, so turning them into ingenious inventors isn't that big of a leap.
Goblins, golems, maybe less worgs and more whirligigs and dynamite and firearms and such...
Think constructs, think wizards, think arcane magic....Goblins won't be any more shabby at that than any of the rest of the core races, after all.