J.H.
I agree that you don't HAVE to give parting gifts, but if you really want to ... how about a cookie cutter or an ornament. Or perhaps an ornament that looks like a cookie? You could actually make those yourself. My stepdaughter made us some really cute ornaments a few years ago. She basically made some sort of dough and baked them. Be sure to poke a hole in them before you bake them to tie on a ribbon. I'm sure you can google a recipe for doing this.