If you have a grill you can place over the fire, cut an orange in half and then eat the fruit, leave the peel shaped like a bowl.
Bring a roll of the refridgeratdd cinnamon buns, cut off a piece and put in the orange peel, and then set on the grill over the fire. It'll Cook that way and add some orange flavor to it.
You can also get some waffle cones, and fill them with marshmallows, chocolate, or any other treat that will melt. Wrap in aluminum foil and set number the fire upright. It'll all melt together into a gooey mess, kids love it.
You can also buy a pie iron for the fire. There's dozens of ideas for them.