repost from elsewhere
through the daytime, instead of using flints for sparks, the goblin just bashed little sugared black coffees against his brain to write, saying "....well it probably shows too, but I swap all this for large mugs of tea in the evening, just that I need more liquid for the same amount of caffeine then, so it's stimulants rather than sedatives that work for me then, just I can't write till my mind is on fire it seems..."