The oil can on the conveyor stage.
Yes! That didn't take long. Of course by leaching I mean jumping away from the can, not over it. However, it's a pointless leach unless it let you combine pies with the can. But it doesn't
What sucks though is there's the oil can on barrels that has the ability to kill you, and to leach an object, the object has to have the ability to kill you for the program to pick it up as giving you points. Of course, I've tried it many times even trying to time the joystick push to the right when mario is at peak level, but the object is just out of range. And of course, tried it on the girder above the can.
If it wasn't for the invisible wall near kong on barrels and springs you could do it there.