It's a classic: 20 Questions is a game that can get kids thinking about something other than if you're there yet. Players take turns coming up with an answer -- typically a person, place or thing -- and get ready to be quizzed.
Then the rest of the participants think up yes or no questions and try to narrow down what the answer could be, getting more specific as the game progresses. If no one can guess correctly by the end of 20 questions, the answerer is the winner. If a questioner is able to figure it out, they win and get to respond to the next round of 20 questions.