For those who do not know the very irreverent card game "Cards against Humanity", do check it out.
The rules are really easy and you can make each as twisted as you wish.
Under the Creative Commons licence, they allow users to print their cards for non-commercial use. That's pretty nifty.
This origami box was made for a great friend of mine. You should check is stuff too: http://throughwoodeneyes.tumblr.com/
The outer fabric is light wool and shirting on the inside.