Preheat oven to 350 F.
Stir together flour, salt and baking soda and set aside.
In a large bowl, cream butter and sugars together.
Add in pudding package and cake mix and beat until well blended.
Add eggs and vanilla and mix until smooth.
Add flour mixture slowly until well incorporated.
Mix in sprinkles sprinkles.
Roll into 1 inch balls and place on greased baking sheet.
Bake for 10-12 minutes.