How about some Puppy Chow? (for you - not your pet!)
NOTE: This is a great people/kid snack that looks just like Puppy Chow.
Melt margarine, peanut butter and chocolate chips in a microwave on medium setting until melted. Stir. Place one large box of Crispix cereal in a large pan and pour chocolate mixture over top and coat thoroughly. Place 1 lb box of powdered sugar in a grocery bag. Put coated cereal in the bag and shake until powdered sugar covers cereal mixture .