3 opaque cups, small toy or other small item you have handy (sugar packet, key, etc)
This simple game for toddlers and preschoolers is based on the same principle as peek-a-boo, the favorite game of many infants. To start the game, hide a small toy under one of three cups while your child is watching. Then move the cups around and ask him to guess which one the toy is hidden under. Hint: for young children, move the cups slowly at first so they can keep track of the toy. Be sure to celebrate when she guesses the right cup!