The card stock I use is not handmade; it's recycled, and it's free. I work at a Domino's Pizza in Ann Arbor, MI (but looking for a job in commercial art!) and we regularly receive shipments of Domino's dip cups. Those're those sauces you dip the chicken in. Ranch, BBQ, Blue Cheese, Mango-Habanero, Garlic, and the Icing for the Cinnastix. The sauces in the box are stacked two or three high, and between them are card stock, sometimes two or three sheets. This is the card stock I use. I have the permission of my supervisor, and I only pick the good ones that aren't greasy or creased. Off each sheet I can cut three 4"x6" cards!