A Grenade.
Spear most likely, it can be thrown too.
boomarang
A stone that could be thrown .
A silver knife, thrown by Bellatrix.
The Byzantine Empire used a weapon called Greek fire, which no other group had. It was a flame thrower of some sort, but could alternately be a bomb or grenade that was thrown and burst into fire on impact.
Thor's weapon is called Mjölnir. It is a powerful hammer that, according to Norse mythology, was forged by dwarven brothers and is capable of returning to Thor when thrown. Mjölnir symbolizes Thor's role as a protector of gods and humanity, and it is often associated with lightning and thunder.
Probably as a weapon to be thrown, or as a cave shelter.
a weapon that is forcibly thrown or projected at a targets but is not self-propelled
Spear, harpoon, knife, dagger, rock, ...
A boomerang is a weapon that starts with the letter B, and returns to its owner when thrown.
A weapon consisting of balls connected by strong cord, which when thrown entangles the limbs of the quarry.
Native Australian word for a weapon that can return to its owner when thrown.