Hot Potato Foil  Have as many small prizes for as many children that are attending the party. Start with the best prize and wrap it in aluminum foil.  Place the next prize on top of that and wrap the whole thing in foil. Continue until all the prizes are wrapped in foil and you have one big ball. Pass the foil ball around like a hot potato and when the music stops the child left with the foil potato gets to unwrap the top layer and keep that prize. That child is then out of the game.  Continue until the last child gets the best prize. That way everyone gets a prize.