The magician shows a large die resting on a tray.  The die measures 3" on all sides, and the tray is a flat tray only 0.75" at the rim, and approximately 11.5" square.The performer picks up the die, taps it to show it is solid, then "smashes" it on the tray.  The die is gone, and in its place is a large ball which can be handed out for examination.You can have the die vanish completely if you wish, or change into a large bouquet of spring flowers, a large bundle of silks, or any other load item which you can fit into a space of 3" x 3" x 3".