Effect: You reveal a thought-of name.
Secret: Cut a slot in the top of a box with a removable lid and tape a small box on the inside. Write the same name on 10 slips of paper. Put them in the box and replace the lid. Hand out 10 blank slips and ask spectators to write a name on their slip. The slips are put in the box through the slit. They actually go into the hidden box. Remove the lid for just one slip to be chosen. As all the slips are the same it is easy to reveal the name chosen.
Secret: Cut a slot in the top of a box with a removable lid and tape a small box on the inside. Write the same name on 10 slips of paper. Put them in the box and replace the lid. Hand out 10 blank slips and ask spectators to write a name on their slip. The slips are put in the box through the slit. They actually go into the hidden box. Remove the lid for just one slip to be chosen. As all the slips are the same it is easy to reveal the name chosen.