Better yet they wouldn't even need to be madic users
on one hand it could be accidental where everyone is looking for any kind of magic even artificers but it's just very bad luck that magically ground flour is a new craze so the docks and warehouses that keep exploding haven't been storing the flour right, there's enough left over magic in the flour to make it disperse in the air sometimes then some old fashioned places are still using lanterns for light, police and gangs alike are on a man hunt
or you could have a pretty basic setup of a fine finely ground powder inside of an empty egg with some kind of rune that let's out a small fireball when destroyed painted on the side, everyone thinks this low lever magic user is some grand wizard for transmogrifying eggs into explosions, on top of that I wonder if thermite can be set off in a powder explosion kind of way
Just enough money to buy fixxer uppers but not enough energy or money to get them properly fixed, it's kind of like the sam vimes boot theory of economics or some such, my brother really didn't expect to have the cheap trucks he bought to fix within a year but then he has no motivation after work to fix work on them and too much pride or not enough money to go to a shop
Had a similar argument someone wanting to use heat metal to make and impromptu fireball using metal powder, I don't think any one agreed with the guy that it wasn't pushing things a bit too hard
I always forget 30 rock existed