Stone

Stones can be found randomly scattered in the wilderness and are used in the construction of fireplaces, cellars, stone axes, and traps such as the light lever trap. They are more commonly found along shorelines and in mountains. Each stone weighs 14 lbs.

Because NPCs sometimes pickup weapons in their path when fleeing or rushing into combat, stones can be used to cripple them both as a thrown projectile and as a heavy weight to burden them.

Weapon status
Stones can be used as a stop gap ranged weapon and are useful for getting squirrels out of trees with minimal damage done to their skins if nothing else is available. Rocks are also useful in this manner.

Trivia
Oddly enough, they are sometimes found in general goods shops.