Magical energies abound in the land around the Pit of Infren and Last Stand. Magical mining towns would abound in this fertile area, if they could survive.
An angel who sacrificed wings to save the world
Who would have thought a key would be this big?
a fur coat with interesting properties and penalties
On a location with numerous webs, and at least one big spider, there is a something inside a cocoon. It is humanoid in shape, still moving. If the heroes free it (not before they kill or drive away the spiders), they meet a ... zombie!
The poor zombie wandered the dungeon alone, and tried to kill a big living creature (= a spider). The spider used the usual treatment, even if this victim did not look tasty. The zombie can be easily killed as any other zombie. It got but several doses of spider-poison, so can be something worth if it is extracted. You can mention to a druid or ranger the fact the spider had no poison anymore.