Where ya at now? If you're still looking for something around Houston check out Brazos Bend State Park. With all due respect to Wichita Falls I wouldn't go there and Oklahoma on my way to NM. Find something in the "hill country" and buzz into San Antonio for the river walk and Austin for whatever.
Maybe work your way down the coast and check out N. Padre Island. Then Big Bend and something out west. Balmorhea SP is cool this time of year. Hit Hueco Tanks just before you leave Texas.
add: If you're in San Antonio Feb 23-March 6 they probably will be doing something special to commemorate the Battle of the Alamo.
