“ The PC's end up in a strange world where the very rocks are made of gold and jewels.As such gold and jewels is worth very little, but the iron in their swords and belt buckles is suddenly worth a LOT.”
“ 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.”
“ ...among the items identified was a dolphin-shaped bathtub of marble and porcelain, a winged-back, high-chair of teak and velvet studded with fire opals, the gear-thing contraption from the dungeon-laboratory of Dr. Bezemot, the oil portrait of the rubicund Madame Orundilde Tarwygg, and a strange item known only as the Last Candle.”