This is a cute keepsake that can be kept as is or made into a magnet.
cardboard(thicker than a cereal box, but that’ll do in a pinch)
dark brown felt, craft foam, or anything material in a pinch
Cut the cardboard into the graham cracker shape that your kids choose(small or larger).
Cut the dark brown fabric to be a quarter inch smaller, so the “cracker” shows all the way around.
Glue together. End by glueing your marshmallows(cottonballs) on top.
Your kids can make a whole bunch to put on a tray for a cute table centerpiece!