I've run kobolds SO MUCH in my life as a Pathfinder 1 GM that I've decided to excise the kobolds from Kingmaker entirely. They will be replaced with all the different kinds of gremlins. And they will feature in book 1 where the kobolds were, but they will also cause all kinds of trouble in book 2 -- in particular, they'll be responsible for ruining the Narthropple expedition (the gnome caravan found stuck in the river).
As fey, they will also report back to Nyrissa.
The Bestiary says, "Nothing pleases a gremlin more than being involved in the collapse of something complex." They like to destroy machinery, from simple wagons to Numerian tech. But to do this, at least some of their work likely *relies* upon machinery -- that is, traps to break or disable other devices. IEDs when a wagon wheel rolls over it, etc.
So I've come to ask for creative input. Any ideas about traps, anti-traps, devices, anti-devices? Anything that would help sabotage the civilized world? Any "trappy but not really an actual trap" ways for the little guys to get some advantage in a combat encounter with the PCs/heroes?
The only idea I have so far, aside from an IED vs wheel, is that they might use magnets to "disable" a warrior's weapon or armor. Unfortunately, they probably dislike the magnets themselves! And... ya know... kinda difficult to imagine a bunch of little losers working up a magnet so big & powerful it could tug away a weapon from a range.
How would they defend their lair? If found in the wild, how would a "team" of gremlins try to screw up some competent adventurers? If unleashed upon a fledgling settlement in Kingmaker, how could they sabotage the growth/success of that town?