Four mini-expansions for $1 by longtime RPG author and SJG bean counter, Phil Reed. I usually just pledge a buck for the PDF, and he sometimes provides additional PDF content in the updates even at that level. Usually, they all unlock during the campaign. You can pick up his earlier works for a higher price during the campaign, but I wouldn't bother. Crunchy RPGs would require you do the statting, but narrative ones, like Dungeon World, would use these ideas as springboards for play.
https://www.kickstarter.com/projects/philipreed/bizarre-citizens-and-foes-for-use-with-fantasy-rpgs?ref=9ikohn