Crimson Longinus
Legend
Riffing on random things the players get interested in is like 80% of my gameplay.
Right. Go with the flow. If the players think the sewer goblin is interesting, then make them meaningful. And if there is some big plot you're desperate to run, then loop the goblins back to that. Like the sewer goblins are upset that the big bad has been dumping toxic waste caused by his undead army creation scheme into the sewers or something.