Goblin adventure. Looked to German and Nordic folklore for inspiration, particularly the Kobold. Short, subterranean creatures in red, orange, or black skin and miner's clothes, living in caves and mines. They carry flutes to scare people, shake their heads back and fourth, and/or have luminous circles where a human's heart would be. Often fire-themed.
Rolled Darkness and Fear, so the shining heart-light seems thematically appropriate, as does connecting the fear save to the sound of their flute. Rolled a totem for treasure, so I threw in a bit about them worshipping Bergsrået.
Most of the villagers got killed, players tore down or burned most of what remained and abandoned the village to settle with their neighbors.