How do you like an idea of a pasteboard telephone with the help of which you can make only one call? The electronic circuit and memory with the number that you will use are placed in a pasteboard rectangle by size of credit card. And now I would like to explain all the advantages and purposes of this phone.
It can be added as a supplement to the package to confirm about delivery. Also, it can be sent with the flower basket. Recipient just should contact to the sender by this phone and after that it becomes non-active and you can simply throw it out. Of course, it should be at a low price.
This idea of having so tiny and cheap telephone took into my head not by chance. People traveling a lot may already well know about the problem of different telephone networks and standards established in different parts of the world.
By the way the idea to change existing expensive and metallic telephone to the paper and cheap one is a new environmentally appropriate idea, I think.