For your Baptism party theme, here is a game idea that can be altered to fit the Baptism party theme.
Check out Baptism
Party Games for more free party games. The earliest extra-biblical reference to baptism occurs in the Didache (c. 100 A.D.), the Epistle of Barnabas (c. 130 A.D.), and the Shepherd of Hermas (c. 150 A.D.). All of these works describe the practices surrounding baptism in ways that imply it is adults that are baptized.
HAS IT THE PLAYER NEXT TO YOU: The participants get into 2 circles. The circles are moving clockwise. The instructor asks: "Have the players next to you shoulders?". The players answer: "They Have!". The instructor asks the players to put their hands on the shoulders of the players next to them and to continue moving. The questions of the leader: "Have the players next to you noses?", "Have the players next to you ears?", "Have the players next to you waists?", "Have the players next to you knees?", "heels" etc.