As a little exercise, I drew a dungeon and stocked it according to the guidelines in the 3 original Dungeons & Dragons booklets. Behold, the Temple of the Berserkers!
(for a one-page adventure, print "2 pages on 1 sheet")
* 2020.08.11 - updated the file with a new map and a couple of minor edits.
Big thanks to John Bragg for spotting the error in the elevation levels!
I started with the map (because I love drawing maps). 40-ish rooms, interconnections, etc., and I added some features like statues and secret doors right away. Then I reserved the bigger or more peculiar rooms as "specials", but didn't put anything in them yet.
Instead, I went through the rest of the areas, stocking them randomly, as a level 1 dungeon. The OD&D procedure is clunky (and can be substituted with a single-roll stocking method), but I used it more or less as written. Next, I rolled up random monsters for each populated room.
At this point, due to a freak coincidence, I rolled Berserkers three times. And so, a theme emerged. A temple/dungeon mostly overtaken by Berserkers, and a couple of other creatures and NPCs, who are either their leaders, allies, or, in some cases, enemies they can't get rid of.
With this theme set and most rooms stocked, I returned to the specials and adjusted them to fit the theme (or not fit the theme, as OD&D dungeons are not supposed to be all logical...).
I like how it all came out and it was fun to make. Enjoy!