New Mexico & Texas trip suggestions please

We just did a Texas road trip and loved it... well except for the humidity in the middle of the summer, even then we loved Texas. We had stops in Williams AZ, rode the train to the Grand Canyon, etc. Went to the Monument Valley and Navaho Nation, loved Distant Drums RV Park/Casino, Montezuma's Castle, etc. We loved Austin and especially the Texas Hill Country. The Riverwalk and Alamo in San Antonio was worth seeing. The Alamo is nothing like we have seen in the movies :). We spent most of our time at Port Aransas and can't wait to go back. In "Port A" we found lots of Great Food, Super People and the sights were memorable. We introduced "Low Boil" Cajun Food to the Grandkids, they now love any meal that is served with hammers and bibs :)JH