Preheat oven to 350 degrees.  Grease a baking sheet and cookie cutters.  Mix flour, salt and baking soda together and set aside.  Cream butter, brown sugar, and sugar together.  Stir in the pudding and cake mix until well blended.  Mix in the eggs, vanilla, and mix until smooth.  Add flour 1/2 cup at a time until mixed well.  Stir in the sprinkles.  Use an ice cream scoop to place the dough inside the cookie cutters.  Bake for 8 to 10 minutes.