We played "prayer tag" today. (Actually I got this idea from another curriculum that has a unit on Daniel.)
There is a "stopper" the person who chases people and tags them.
The other children run/move about the room.
The stopper can't stop them if they drop to their knees and pray, but if they are touched while running/moving around the room they become the stopper.
I demonstrated first and prayed a prayer out loud for our pastor. It was neat, because overall they really did pray each time they dropped to their knees.