http://stores.silkmagictricks.com/products/sponge-cross-and-cubes-gospel-magic-trick.html A volunteer simply touches one of your hands. Both hands appear to contain four small "blocks". The volunteer holds tightly to one set of blocks, while the others are used to demonstrate what people may think they need to build a life of success and happiness. This life based on worldly possessions collapses. When the audience member opens their hand to reveal what is inside. The blocks have transformed into a cross.