Make your sandwich first and then stamp out your shape, this helps hold the sandwhootch together better. Any kind of sandwich your kids like is fine, this one is ham & cheddar cheese which goes great with the pickle.
Once you have them stamped out, draw your details on. I find when I squish the bread down, the writers work better because there's less holes for the pen to drag in.
After that, get a pickle, slice it in half and slice out some shapes around the edge to form your branch. If transporting in a lunch pail, I often put a tiny bit of mayo or butter on the bottom of the sandwhootch and branch to act as the 'glue'. That's it. Happy Hooting!!!
*Side note: If you have never tried pickles in your grilled cheese, you need to, it's amazing.*