Rock

A rock is a projectile weapon. You can throw it by hand, but most monsters prefer to use a sling; so should you. If you kill a hobbit, you might find a sling. Wield the sling, then throw or fire the rock.

From the sling of a hobbit, a rock harms you with 1 to 2 points of damage, possibly more.

Digging tools will make rocks out of boulders, but they're rarely in short supply. Rocks have no resale value in shops.

With a stone to flesh spell rocks can be turned into meatballs. This is the only way of gaining meatballs, which, however, unfortunately have a very low nutrition value.