Hide a helium filled balloon with a person near the back of the church.    In worship offer flat balloons to several people in the congregation and ask them to blow them up.  Then offer many of them a string and see if their balloon will need one?   Then have the person in the back present their balloon that has the helium in it.  As it pulls on its string. Explain that people who are filled with the Word of God and apply it to their lives, their lives will need a string and soar!