I would too, I'd hand them out for Christmas, or even Halloween.
It'd be fun just to imagine all the curiosity and inevitable questions and confusion, bewilderment and mass hysteria, which ofcourse would lead to society breaking down, people running amok in the streets, and the eventual collapse of modern Civilization. Något gick fel you say? oh yes! Något gick fel, indeed!
The best part about the end of the world? we could blame it on the Swedes.