my daughter is 6 years old, please suggest some cognitive skills development activities and games

A. Buy brain stimulating games Talk more and more with baby keep home environment happy physical development stimulates brain development encourage to explore curiosity, Give foods rich in iron, proteins, Minerals, vitamin A,B group and C, Include foods like : dairy products, , beans, nuts, seeds and lentils ,iron rich foods like spinach, meat, apricots, liver, apples and raisins, guava, kiwi, strawberries, papaya and citrus fruits, spinach, broccoli, red peppers, nuts, tropical fruit , sweet potatoes, green vegetables