Nana's Butter Cookies

1 cup butter, creamed1 cup sugar2 eggs4 cups sifted flour1 tsp vanilla3 tsp baking powder1/8 tsp saltcolored sugar, chopped nuts, shredded coconut, or candied fruitTo the creamed butter gradually add the sugar; when fluffy beat in the eggs; add the vanilla. Sift in the dry ingredients in 3 installments, mixing with the hands if necessary, to form a stiff dough. Form into a ball; cover with waxed paper; chill thoroughly. Roll out 1/8 inch in thickness; cut with a plain or fancy cutter (2 1/2 inch) dipped in flour. Sprinkle with sugar, nuts, or other decoration. Transfer to baking sheets with a spatula. Bake at 400 for 7-10 minutes to a light brown. Remove to a rack and cool; pack away in a covered box to keep them fresh.Yield: 84 cookies (2 1/2 inch)