Melt soynut butter and margarine in a saucepan over medium low heat until margarine is melted and mixture is completely combined. In a large bowl, combine powdered sugar and rice krispies. Pour soynut butter mixture over the cereal mixture and blend with your hands. (Mixture will seem slightly dry, but when formed into balls, should stick together). Form into balls, no larger than 1-inch in diameter. Place on cookie sheets or in pans. Chill until firm. Makes approximately 120 to 150 bon bons.