Having just submitted my Dungeon—The Fevre Pytt—I thought it might be handy to detail how I utilised the prompts from the B1 Dungeon Feature list.

The Fevre Pytt can be found here on itchio for PWYW. It's the most disgusting thing I've written since my teenage years and was a lot of fun.

a) Several one-way secret doors

Didn’t use these.

b) Illusions and magic mouths

Hallucinations brought on by the Fevre.

c) A wind corridor which may extinguish torches and open flames

The release of gases from the mass of Fevred Flesh at the base of the Pytt. Can be felt in the Flesh Crawl.

d) A room of mysterious pools

Pools of liquid flesh that spawn Reconstituted Flesh mobs. Also contain items of potential value.

e) A room of doors

It is what it is. A room full of doors. Randomised generation of rooms beyond the doors.
f) A water pit trap which suddenly drops adventurers to the lower level

Part of the randomised rooms beyond the room of doors. One way pit trap that activates only once, dropping one or more PCs into Eastern chamber on bottom floor, dousing their torches.

g) A portcullis trap where vertical bars drop behind the party in a dead end corridor

Poison gas corridor. Gotta have one.

h) A pair of teleport rooms to confuse explorers

Part of the randomised rooms beyond the room of doors. Disintegrates a PC, rebuilding them mirrored in another room.

i) Several magical treasures - most beneficial, some cursed

Vile Objects. Lovely nasty Mork Borg magic items.

j) Mysterious containers with a variety of contents for examination

Can’t get more mysterious than strange fleshy polyps containing objects. There’s also a Mimic.