Ways to save on Houston Feild trips and family outings

There are plenty of ways to save on Museums and activities in Houston. Many of the Museums are free everyday or at least have one day a week (or month) where general admission is free.
I found a good list at houstonmuseumdistrict.org 

Free Everyday:

Asia Society Texas Center (all spaces except Louisa Stude Sarofim Gallery)

Contemporary Arts Museum Houston

Holocaust Museum Houston

Houston Center for Contemporary Craft

Houston Center for Photography

Houston Museum of African American Culture

The Jung Center of Houston

Lawndale Art Center

The Menil Collection

Rice University Art Gallery

Rothko Chapel

General admission is free on certain days for these museums

Every Monday

• Buffalo Soldiers National Museum - FREE Monday 10 am - 5 pm
• Czech Center Museum Houston - FREE Monday 10 am - 4 pm

Every Thursday

• Children's Museum of Houston - FREE Thursday 5 – 8 pm
• The John C. Freeman Weather Museum - FREE Thursday 12 – 4 pm
• Houston Museum of Natural Science - FREE Thursdays 3-6 pm through summer (beginning Thursday, June 14). Thursdays 2-5 winter.
• Museum of Fine Arts, Houston - FREE Thursday 10 am – 9 pm
• The Health Museum - FREE Thursday 2 – 5 pm

Once a month:

• Houston Zoo-The Houston Zoo offers free admission to our guests on the first Tuesday of every month from 2 p.m. until closing.
•  Bank of America cardholders receive one free general admission on the first full weekend of each month. See here for the fine print. Weekends coming up are Nov 3-4, Dec 1-2, Jan 5-6, Feb 2-3, March 2-3, April 6-7.

Of course not everyone is going to be able schedule their visit during the free times, but if you look there are discounts available than just the 9 day Citipass you will see advertised everywhere. Here are the ones I have found for the more popular Houston attractions...

 Health Museum savings coupon. Buy one get 1/2 off exp. 2/17/13

Houston Museum of Natural Science Corporate rates
Save over 50% on permanant exhibit entry to Houston or Sugarland. Discounts on Butterfly house and Planeterium and other current films and special events.

Johnson Space center Buy your tickets online and save $5 a ticket. If you live in the area it would probably be a great deal to buy a years membership for only $3 more than what you would pay at the gate to get in.

The Houston Zoo's website has a very long list of discounts available. Not super great discounts, $2 off adult tickets  and $1 off a child (seriously only 1 and under is free?) if you pre buy them at Fiesta or are members of AAA.
 but If I find anything else I will update the post. However at this rate I think we might try for the free times...

I'm off to hunt for some more.....