This game is a cross between Chinese Whispers and Pictionary.
Divide your group up into teams of 4.
Ask the first member of each team to gather in close then whisper a sentence, object or phrase to them. For example "Christmas Time" or "Boys playing basketball".
They must then return to their teams and attempt to draw (without talking) a picture that communicates that phrase. When they are finished, they pass the drawing to team member 2. He/she then whispers the phrase to team member 3 who then draws it and passes it to team member 4, who then writes what they think the phrase is on the picture.
Once all groups are finished, get all the Team Member 4's to reveal the drawings (you'll be surprised!)
For larger groups, you can extend the team size to 6.