I am going to be playing an Alchemist again and was trying to figure out what the damage rocks would be as I going to be playing dirty and using the Throw Anything feat a lot.
Here's an alternative. Clubs are found wooden bludgeoning weapons that many be thrown. A rock is simply a club made of stone.
Here's what we know from this:
A 3-lb medium-sized club does 1d6 damage. A small-sized club does 1d4 damage and weighs 1-1/2 pounds.
From this we can extrapolate that a large-sized club does 1d8 damage and weighs 6-lbs.
The weights might be a bit off but I would say that covers is one way to cover rocks.
"small rock" as a light weapon 1d4 damage.
"average rock" as a one-handed weapon 1d6 damage.
"large rock" as a two-handed weapon 1d8 damage.
The bestiary actually covers the extraordinary ability to throw rocks. In which case "Damage from a thrown rock is generally twice the creature’s base slam damage plus 1-1/2 times its Strength bonus."
So for chucking a two-handed rock. The damage would be 2d4 for a medium creature. That seems to fit nicely with the above.
The Endless Bag of Dung is only 500gp.
Does that include the fly- and Otyugh-repellant?
Rocks don't do any actual damage.
But, they do automatically defeat scissors.
(p.s. Avoid paper.)
Why not just use the stones option for slings?
CRB examples of S, M, & larger rocks.
Just throw them by hand with a 10' range bracket?