Effect: The magician has a card selected. He fails to find it. Luckily, for just such emergencies, he has an insurance policy. The policy is opened up by the spectator to discover a picture of the selected card printed inside the policy that’s large enough for everyone in the audience to see!
This is an inexpensive way for magicians to carry a “big” trick in their pockets. Popular for years. A proven winner. Reusable for many performances.