The Doll House holds what you would expect it to hold, dolls. With one minor detail.
The bureaucrat in the Office of Interior Development expects us to solve a riddle before he will even SEE us? You’re kidding me right? Oh, you’re not kidding…
Fairly small and innocuous looking, appearing to be little more than broken trinket, a dissassembled "ship in a bottle", this artifact of immense magical power only starts to show it’s power as you meticulously rebuild the ship in the bottle.
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.