Here's the best educational bargain I've seen.
With a membership to one of the participating centers, you gain free admission to 290 science centers and museums around the world! Some of the smaller museums have a lower annual membership fee and would pay for themselves with a single visit to one of the more expensive museums like Chicago's Museum of Science and Industry. There are some restrictions and exclusions so be sure to read the website and always call the museum you plan to visit to be sure that they're still particpating. These include everything from space centers to children's museums.
http://www.astc.org/members/passlist_about.htm
"...for the happy heart, life is a continual feast. Better to have little, with fear for the Lord, than to have great treasure and inner turmoil." Proverbs 15:15b-16 NLT
If you lose hope, somehow you lose the vitality that keeps life moving, you lose that courage to be, that quality that helps you go on in spite of it all. --Martin Luther King, Jr.
The pessimist sees difficulty in every opportunity. The optimist sees the opportunity in every difficulty.--Winston Churchill