There's a whole mess of pots and pans. Go with what works. The goblin filled his pan with oil first and dumped it on the girl as he set her on fire. But you have hot water for dishes boiling or something like that. Not to mention cutting knives, cleavers, ladles, forks, bowls, soap and a bowl of stew.
Don't make up something that really does not fit the scene, but within reason you can have what you want.
Burning coals won't do much damage. They are gonna panic the crowd, but it's just a lump of coal bouncing off someone.