choo choo tickets
Shown above are some of the tickets of the train rides I have/have not taken :P, all of them older than this rundown blog of mine. At the top is the top and reverse of the Kowloon to Guangzhou through train ticket. Second on the left is the tix for Light Rail of Hong Kong's New Territories. Bottom left is top and reverse of the Trans-Perth ticket. Occupying the bottom right are the train tickets of the People's Republic of China. If you have a sharp eye you can see they are of different classes, ie some have hard seats, some soft cushioned seats, some air-coned.
I doubt if they still use these tickets nowadays.