Boomerang

Boomerangs are carved from a single piece of hard wood with a convex top surface and flat bottom. It is this shape of the wings that gives the boomerang its aerodynamic qualities, allowing it to be propelled swiftly through the air, while the curvature of the arms provides for swift rotation. Contrary to popular belief, not all boomerangs were made to return when thrown, but were instead made to strike a distant target. Skilled hunters could accurately throw boomerangs up to 200 meters to strike and incapacitate big game such as kangaroos and emus, the large flightless bird endemic to Australia. They also served as highly effective weapons during combat.