Well the Doomerang from the Ty Tasmanian Tiger series can be controlled, Gravity does not affect it but it will go back to it's user if it goes out of a level or it hits a wall.
In TY 1, It was given as a last min gift to defeat the final boss, It is not saved after you beat it and can only be used outside of the level through hacking.
in TY 2, You can buy it from Sly but requires buying a other boomerrang before it to unlock it, It's the same as from TY 1 but will explode when it goes too far or it hits a wall.
I don't know much about it in TY 3 but i do know it was renamed.