I have added tamales to a pot of chili lots of times. Austex or Hormel will do. I always add corn tortillas, 2 per lb. of meat.
I must make most chili mild for the kidos. I just add nacho sliced pickled jalapenos, with some of the juice, to my bowl. It blends in fast. La Costena is my favorite brand. It comes in a can and I use a Rubbermaid container to keep them in. I use the juice for lotsa stuff. I keep nacho sliced and whole jalapenos on hand.