It's a well-known fact that boomerangs were invented by Australian aborigines and served them as a perfect weapon both for hunting birds and small animals and for gathering fruit growing high above the surface. Boomerangs may be of different shapes and sizes, and what is common for them is that their aerodynamic characteristics make them turn their flight back to you, so you're not going to loose this weapon in any circumstances, it's perfectly nonexpendable!
My idea is starting a new kind of Olympic sport of boomerang-throwing. The professional athletes from all over the world would compete distance and target hitting accuracy throwing, using standard weight, shape and size boomerangs; the precision of boomerang return to the sportsman would also be judged

Can you people think of other kinds of non-conventional Olympic sports boomerangs could be used in?