Could your cake or cupcake recipes could use garbanzo flour?
You can use gluten free all purpose flour blends (either the recipe in EHH for a GF blend on page 303, or a commercial blend such as Bobs Red Mill) in any cake or cupcake recipe that uses whole wheat flour. You cannot use just garbanzo bean flour (in my recipes, or in any recipes). It doesn't work as a straight replacement. You need to blend multiple GF flours together and also mix in a binder.