Stockbrot / Bread on a stick
Stockbrot (bread on a stick) - another German customs and kids love it - from preparation to result!
Look for a stick in the woods or in your garden and clear the top with a carving knife.
There are a lot of recipes in the internet (Stockbrotteig). Wrap the dough around the stick and hold the stick not in the fire but slightly above.
To be on the safe side make a fire in a firebowl (which you can obtain at a Baumarkt or garden center).
Of course marshmallows & little sausages such as Nürnberger work as well