This is something that happened in Netherlands and it was only for one day.
They have used conductive ink that got printed on Place mats as can be seen above that can be used to control and record a music app that goes with Android and iOS.
If I was living in the Netherlands guess I would have had to eat one of their disgusting hamburgers to play with this! But have a feeling that this will happen in some other countries as well so maybe keep an eye out on the local McDonalds...
Unfortunately conductive ink do not last too long on paper as any crinkle is like breaking the circuit otherwise it would be a neat thing to keep around.
If any reader played with this please let us know what you thought in the comment section!