I am not only a gamer but also dabble at being an independent RPG supplement writer. You can find my products on drivethrurpg.com
I always enjoyed to brew up random (and not-so-random) encounters, especially to fill up “gaps” in provided modules.
Lists, game aids, printable resources etc.
By the by, I write all of these for different genres and games (when they allow 3rd party publishing). Just click the one you like the most! I am not affiliated with any of the listed publisher I write compatible products for.