So, the marshmallows you typically see in grocery stores contain gelatin, which is processed collagen extracted from the bones, skin, and tendons of animals. Most graham crackers have added honey, another animal product that vegans do not consume. Fortunately, there are vegan alternatives for both of these products! My favorite vegan brand of marshmallows is Dandies and my favorite brand of graham crackers is Nabisco. So, always be sure to check the ingredients just to be safe!