This game involves lots of pats on the back and laughs, so it's perfect for family gatherings.
Players try to stick a paper snowman (ours is made of card stock with a loop of painter's tape to attach it) on a person's back without her noticing. When that person realizes the snowman is on her, she has to stick it on someone else's back. Don't worry about the snowman staying on just one back for hours -- giggling kids are sure to give the person a clue before too long. Try to have the snowman visit everyone's back by the end of the day.
This game is a part of these parties: