An dagger made by setting a long sharp gem in a silver hilt. Its owners rarely survive for a few days…
This sword, enchanted with the dark magic of the Underworld, is wielded by Never Ending Silence, a Death-Knight.
In one region of a forest, all of the trees are identical, down to the leaves and the twigs. If the PCs carve something into one of the trees, it could mystically propigate until it covered all of the trees, or could vanish since it was not carved into the one true tree.