playing cards/ first aid and survival on back

My father used to have a set of old playing cards with first aid instructions, and i believe, survival notes on the back. I was wondering if any one has a line to something like this. I think it would be great to have some knots on them, some edilble plant pictures, and waterproof to boot. Any ideas?

Something like this?

http://store.safetycentral.com/surdecofcar.html

They also have a deck of edilble plant cards and a deck of knot cards.
I do not know how good they are.

I have two sets of the edible plants cards....they are good. They'll help remind you of the good and the bad....but learn it first when you don't need it. They are meant as a refresher not as instruction.