This post is more for local followers, but it wouldn't hurt to check out your area too.
Sacramento Public Library has started a new program called Discover & Go. The program gives library card holders access to free museum passes to some pretty good museums. You simply need a library card, a PIN that goes with that card, and then choose a date for your adventure. Since this program is free and public, it is best to reserve your tickets ahead of time. Each card member may reserve 2 requests at a time. Once you have used one of your tickets, then you may request another one. Each museum has different passes available, so check out the website to find more information. For example, the Exploratorium allows only one free ticket and it is limited to one per year. The Aquarium of the Bay also only allows one pass per year, but their pass is a family pass with 2 free adults (ages 13 and up) and 2 children (ages 4-13). So, check out the website to reserve your tickets.
Some of the museum tickets available include:
Aquarium of the Bay
Bay Area Discovery Museum
Golden State Model Railroad Museum
SS Red Oak Victory
UC Botanical Garden at Berkeley
USS Hornet Museum
And so many more!
If you are having trouble with the links, here is the direct link to the Discover and Go Program: http://www.saclibrary.org/Services/Museum-Passes/