Once I heard a unique story from a teacher. I really need to find its title.
Here is the plot: in the post nuclear war times, a man goes to a strange place to find someone who can send people back in time, to live their good moments again. He meets a strange old doctor who claims that he can do such a thing, but he needs all the remaining souvenirs and tokens from the person who asks for this kind of service, and won't give them back afterwards.
The man refuses to give away his souvenirs. He goes back to his family and lives a happy time. Then suddenly he wakes up in the old doctor’s cabinet, realising he gave up and used his souvenirs to relive his memories. The old guy asks if he is satisfied with the service. The man leaves the cabinet to stay alone in his own ruined house in the post-war time.