"If you wanted to, you can design a whole day and it wouldn't cost you a dime," promised Greg Ortle with the Houston Convention & Visitors Bureau.
The Houston Convention & Visitors Bureau has done the math. They have compiled a list of 33 things families can do in Houston for two bucks or less.
"Get to know your city," suggested Ortle. "You can do it on the cheap."
If you're looking for a place to become one with nature, the Houston Arboretum and Nature Center is fun and free. Located on 155 acres on the western edge of Memorial Park, you can see animals in their habitat and learn about creatures that make Houston home. There are also five miles of hiking trails.
Inside Memorial Park, the Vale Asche Foundation playground is a big hit with kids. It's also fully accessible for children with disabilities.
Parent Jasmina Mangillo said, "I think Houston has a lot to offer. You have to research it and find it."
If you're looking for some spiritual inspiration...
"The Bible Museum is a priceless treasure here on campus," explained Rick Ogden with the Houston Baptist University.
The Dunham Bible Museum at Houston Baptist University offers an extensive collection of rare Bibles, ancient manuscripts and examples of the earliest Bibles printed in America.
"This is a priceless knowledge that doesn't cost a thing," Ogden said.
For something really unusual, check out the free Art Car Museum in the Heights. You may find them odd or ugly, but one thing's for sure, this museum will leave an impression.
Over at the Health Museum, it's free family Thursdays each week from 2 to 7pm.
Grandmother Mary Williams explained, "Instead of going out of town for vacation, we are vacationing here at home."
One of the most popular exhibits is called "grossology" -- a thorough but fun way for kids to explore their anatomy.
You may want to top-off all that activity with a tranquil environment at the Williams water wall. It's Houston's most photographed site with water rushing down its inside and outside walls. It is, of course, free.
Remember, you do have to consider parking. That can be free if you park on the street, but at many places, especially in the museum district, it's five bucks.