Ok, so typically you'd expect players to either get creative with the scenery, or (more likely given the whole purity thing) start spending Spirit or Resource points on finding a readily available supply at the appropriate time?
Basically. Since we don't limit players to only getting charges from vials (this is not how it is in the books) we anticipated people actually eating dinnerware for metal in a pinch

Dragging ultimately is a limit for power-gaming Pewter which was built into the novels, and thus is a pretty rare situation in the game.