Place one single layer of graham crackers(save some) in the bottom of a 9x13" baking pan. Leave the crackers whole, do not crumble. You can fill in the gaps with broken graham crackers. Spread the chocolate or vanilla on top of crackers (save a little of each pudding for the last layers. Cover with another layer of crackers, Spread the remaining of the pudding on top follow by another layer of crackers. Now put the saved puddings of vanilla and chocolate making a swirl on top. Take the saved crackers and crumble them on top.