Where are the best places to enjoy the Rocky Mountains (US) on a limited travel budget?

A friend and I are hoping to see what we can of the Rocky Mountains and other nature-esque point of interest this summer, and need to keep travel costs down as much as possible. Does anyone have any ideas as to camping locations, great views with low costs or free access, and relatively inexpensive food? We'll be coming in from south-central Texas, if that makes any differences. Thanks in advance!

You will be entering Colorado on Raton Pass between Raton, New Mexico and Trinidad, CO.. What a gorgeous view just as you get past the crest of the pass. If you want to see the Rockies in the southern part of the state, turn west at the sign to Walsenburg and follow signs to La Vwta pass, then to the town of la Veta. There is a state park just after La Veta where you can camp...gorgeous place. If you would like to go to Rocky Mtn, National Park, northeast of Denver, it is fantastic. Youcan camp there too. Or you can go on line and book lodging at the YMCA of the Rockies...just 1 mile from the entrance to the park...great place with lodging in all price ranges. They fill up fast so you woud need to make reservations very. When you go to the park, go to the visitors center and get info on al kinds of trails and ikes. Be sure to drive up to top of Trail Ridge Road...it is fantastic. On your way to Denver you will go through Colorado Springs...you could go see Pikes Peak...actually you can't miss it...it twers over the city, go up to the town or Woodland Park, and go see the garden of the Gods with its amazing rock formations...right in the middle of Colorado Springs. i lived in Springs for years, and camped all over Co. I highly recommend the YMCA of the Rockies.