Safety cards are obligatory for every airline. Every passenger has a document in front of him/her, telling him/her what to do in an unexpected situation.
For more Info: https://en.m.wikipedia.org/wiki/Aircraft_safety_card
Because a few people I know collect these cards, I also started collecting them.
(Although it says: do not remove from aircraft airlines always have many in reserve to replace missing or damaged safety documents. It doesn’t harm anyone if one or two are missing ;) )
This topic is for you to share your collection with others.
Here are some examples: