a great place to look for materials and inspiration (especially for one shots wich you talked about in this zine) is the library! I just checked out monster or the week and monster of the week codex of worlds books full of monster mystery ideas. then I also checked out the game masters book of random encounters it has 8 fully fleshed out one chots with a bunch of other maps, lovations, loot tables, and npcs. my library also carries the dnd and pathfinder core rules. also most libraries in your county or region work together where you can go check out at other libraries expands what's available.