I can’t take credit for this brilliant nut allergy picture. A friend of mine named Omar did this for his nut allergy when he is in a country where he doesn’t speak the language (you should check out his pictures, he takes some beautiful shots from all around the world).
If you have allergies and are traveling, this is a fantastic way to let anyone that needs to know about what you are dealing with.
You can customize your own to picture whatever allergy you have, isn’t this an easy way to let your server know what you’re dealing with? I think the skull and bones translates into any culture, no?