Also check this link to see where I got the idea: http://blog.craftzine.com/archive/2010/03/pillow_chair_from_t-shirts_and.html
Step 1: Explanation
(12)Large T-shirts of strong cotton fabric, any thin kind will rip when your friends jump on it. Trust me.
Sizzors, yes I like to spell siZZors like that.
some type of paper for drawing the confusing pattern
chalk in different colors
sewing machiene with stong thread
some kind of stuffing for inside it, I originally used styrofoam balls from an upholstery store then switched to foam blocks (we'll talk more about this later)
You can see what they used on their site.