I used a can of sweet corn instead of an ear of corn, flour tortillas instead of corn and nonfat greek yogurt but otherwise followed the recipe. Really you could include whatever vegetables you have on hand or that your family prefers for the tacos.
The first time we made them I had a couple of corn tortillas on hand so we tried one of each but since we typically have flour tortillas that's what I usually use and really either is delicious. If you have a garden this would be a great dish to use some of the vegetables you've grown!!