A few years back I scattered the ashes of my dear grandma over her property in Holland. We used a rented B206, with my aunt sitting in the rear left seat holding this cannister:
secured to my auntie's wrist with a piece of string. It is especially made to scatter ashes over a field; you swing it back and forth while opening a kind of trap door in the bottom with the handle. It was loaned to us by the funeral home people and worked like a charm. All I had to do was kick in a load of left pedal.