One person is "it" and chooses an object which is visible and within sight in the room in which they are sitting. The rest of the group enters and "it" says something about the object they have chosen such as "I spy something white" but they should only use one adjective to describe it. Then each person in the room gets a chance to guess the object. If no one gets it then "it" adds one more adjective such as "I spy something white and round". This continues until someone guesses correctly. Sometimes with little ones you have to be very specific such as "I spy something white, round and sitting on the shelf above the stereo."