I assume that each church has rolls of plastic tablecloths that are used for potlucks and dinners.
Make a maze on the floor using the tablecloths, tape the cloths together, have 3 entrances to the maze. Blindfold the 3 contestants and place each kid on their hands and knees at one of the entrances. Each one must crawl to one of the other entrances using their hands to feel where the tablecloth leads or ends or turns. All 3 contestants are in the maze at the same time and the first one to find their way out is the winner.