Burrito alternatives/secret ingredients?

Every Wednesday night some friends and I have burrito night. However, we are getting kind of sick of the same old burrito, and we’ve run out of ideas for new ingredients.

Any ideas of what we can add to mix it up? Or any alternatives? We don’t have a lot of time, so a big endeavor like Enchiladas might be too much. We’d like to keep it Mexicanish.

Oh, and one friend is vegetarian.