Most Valuable Artisanal / Pre-industrial Trade

[Raellus]

I was thinking about Molotov cocktails, and how available glass bottles would be three or more years after the end of mass production, and that got me considering alternatives. I figure that small ceramic vessels could serve nearly just as well as glass bottles for making Molotovs. IIRC, at least one ancient/medieval civilization filled pots with venomous snakes and hurled them into besieged cities as a primitive bioweapon.

Anyway, that got me thinking about how many people there would be with the skill to produce pottery in the post-industrial era, and that got me thinking about other pre-industrial trades. I reckon most, if not all, of them would be very valuable during and after the apocalypse. Does any one jump out as being especially so? Did I miss any important ones?

What are your thoughts?

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