Kobolds inhabit dragons’ lairs when they can but more commonly infest dungeons, gathering treasures and trinkets to add to their own tiny hoards. Kobolds make up for their physical ineptitude with a cleverness for trap making and tunneling. Their lairs consist of low tunnels through which they move easily but which hinder larger humanoids. Kobolds also riddle their lairs with traps.
The most insidious kobold traps make use of natural hazards and other creatures. A trip wire might connect to a spring-loaded trap that hurls clay pots of flesh-eating green slime or flings crates of venomous giant centipedes at intruders.