Few Options:
You can make these gluten free by substituting the all purpose flour with coconut flour, buckwheat flour or oat flour. You will be compromising a bit on the taste but not a lot.
Here you can even substitute the butter with coconut oil or vegetable oil. Again the butter is a great flavor inducer.
You can add coconut flakes, chocolate chips, powdered spices, grated orangerind and lemon for the extra flavoring.
Once cool, pack in airtight containers and they stay good for a while.
TIPS TO MAKE A PERFECT PIZZELLE:
Make sure to brush some melted butter on both sides of the griddle before pouring the batter.
Do not pour a lot or a little. A tablespoon is good.
Let the pizzelle heat up and turn to green light before you add another batch of batter. That way it will cook well.
After it cooks, always put it on a cooling rack so that it crisps up.