I have a player whose character is considering taking up the study of alchemy. Since he's a Warrior, he may have some trouble 'seeing' what he's doing, but he's likely to get some advantages when it comes to potions that affect weapons, armour, and other things of a martial nature.
While I have plenty of thoughts on how alchemy will work in my world, it's still a work in progress and I'm curious to know how other people have dealt with the subject. So, what sort of things can the potion brewers do in your campaigns?
I will point you at Trollszine 9 and the article by Dean David Courter about Alchemy in T&T for a wealth of ideas, even if you don't want to lift his take on it.
I haven't had much alchemy in my rpg career, but RQ2 had a pretty good model for it - Poisons, Acid, Healing & embodied spell (you drank the potion and it gave you the knowledge and power to cast a spell).
As he's a warrior, maybe a cost to learn each potion double what a wizard would spend to learn it, and potions can only be created in downtime, with a financial cost OR require some application of WIZ to trigger when used. Or both.
Acid makes a great thrown or slingshotted weapon and eats armour, obviously, as well as doing damage. Increasing potency = more damage
Given the fragility of potions in a delved environment, some kind of bag of potion holding would have great value.
For years I avoided reading the rules sections about Alchemy in rpgs. I just thought they were boring. That changed when I read some weird and cool things Dave Hargrave wrote for his Arduin Grimoire #4 (or #5). The subject was "Orcish Alchemical items", and I found the ideas added a lot of inspiration for setting flavor. I don't own the Grimoires anymore unfortunately (I really got a lot out of them), but I do remember that all the items smelled repulsive to all other races (Orcs loved them). I also remember Hargrave used large costs for some potions/items, and he would specify how much time each dose/batch would take to brew (I think he added expiration times for potency). Getting the ingredients for a special potion could be an adventure seed!