Ask a child a game that develops memory. Prepare two small items - for example, two buttons and give one to the kid. Explain the rules: when you give something to the child, he should say: "Take and remember," and if he forgets, then you tell him: "Take it and remember". In this case he lost. The same applies to you. You should always remember that you are in the game, and when the child something gives you, answer him: "Take it and remember." The winner will be rewarded - fulfillment of any of its desires losers. The game can go on for several days. In the beginning of the game shake buttons, saying, "Take and remember." They will be a reminder about the game.