In a mixer, combine butter and sugar. Add eggs and beat until smooth. Add baking soda in water, vanilla, cinnamon and beat. Add flour a little at a time. If it gets too stiff for the mixer, remove and continue by hand with a wooden spoon. Add dates, walnuts, and grapes--mix with wooden spoon. Drop teaspoonsful on to a greased cookie sheet and bake at 375 degrees until lightly browned.