Set Up Your S'mores
Build your s'mores on a plate: graham cracker, then chocolate, then marshmallow - the top cracker will come later.
When ready, open the box, place the plate inside, close it, then prop the flap open again so the sun reflects into the box.
If you remember our Solar Still, it took a while to capture the sun’s heat, but this time we have the tin foil to direct it. Take a guess as to how long it’ll take for the chocolate to melt.