From Pathfinder Guns & Gears, which isn't enabled.

Fire Box

ITEM 3

UNCOMMON CLOCKWORK CONSUMABLE FIRE MECHANICAL SNARE TRAP

Price 10 gp

Usage held in 1 hand

Bulk —

Category snare

Anyone who opens the box triggers a clockwork mechanism that unleashes a 15-foot cone of fire. The cone issues forth in a random direction determined by the GM but always including the creature who opened the box. Those within the cone take 4d6 fire damage with a DC 17 basic Reflex save.

Pathfinder Guns & GearsORC