Tamale Fillings?

[implicate]

Every year in the fall, the women in my family all get together on a Saturday to make tamales. Our "tamale day" is this upcoming Saturday, and rather than the usual cheese & chili variety, I was wondering if anyone knows of any other vegetarian or vegan friendly fillings. Cheese is ok but not necessary. Bonus if they are traditional fillings/recipes.

Thanks in advance!