Whisk together flour, baking powder, and baking soda.
Pour into jar and pack down level with heavy object.
Chop oatmeal in a blender.
Stir grated chocolate bar into oatmeal.
Pack oatmeal mixture into jar.
Pack granulated sugar into jar.
Pack brown sugar into jar.
Sprinkle nuts in jar.
Sprinkle enough chocolate chips in jar to reach the top.
Center a 9" fabric circle over lid and secure with a rubber band. Tie a ribbon over the rubber band.
Attach a card with the following directions: Spoon chocolate chips and nuts into small bowl, set aside. Spoon brown and white sugar into separate mixing bowl, add 1/2 cup margarine OR butter, cream well. Add 1 egg and 1/2 tsp. vanilla, mix well. Pour oatmeal and flour mixture from jar into bowl, mix thoroughly. Stir in reserved chocolate chips and nuts. Roll into walnut-sized balls, place on slightly greased cookie sheet 2" apart, and bake in a 375 degree oven for 8-10 minutes.