Preheat oven to 250. Combine cereal, coconut and peanuts in roasting pan. In small saucepan over medium, heat brown sugar, butter and corn syrup to boiling, stirring. Without stirring, boil 5 minutes. Stir in vanilla and baking soda. Pour over cereal mixture, stir until evenly coated. Bake 1 hour, stirring every 15 minutes. Cool, stirring frequently. Stir in chocolate chips and raisins. Store in airtight container.