“ 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.”
“ Fedolf, the notorious headsman of Iddland, is known as much for his beheadings as for his operatic arias of doom. A tower of power, standing nearly seven feet tall, and weighing in at almost four hundred pounds, Fedolf strikes fear in all onlookers, especially when he dons his executioner's hood, and goes shirtless, wielding his gigantic double-bladed pole-axe, on his way to the headsman's block. He possesses a beautiful singing voice, and will often send off his charges into the next life, while belting out baritone dirges and antiquated arias, usually involving death, destiny, and duty, in heavy doses.”
“ Made from the tears of a bound goddess, this magical wine has the power to charm or dominate any who imbibe even the faintest quantity. Once affected, it remains dormant until the victim hears a special magical phrase, upon which they will be magically bound to the speaker. Enterprising villains could drop this into the water supply of an important city..”