Tech Be Nimble
I'm more than a little embarrassed that I didn't already know about this great resource, but I figure if I don't know about it, there might be others in the same boat. So I'm spreading the word!
Richard Byrne has a great site that links to tools and resources that are FREE and have EDUCATIONAL USES!
Obligatory disclaimer: the content and learning goals should come first. Only use tools to enhance what you teach. Unless you have a major assignment due for grad school and are looking for a way to procrastinate -- then, spend all day exploring this site and thinking of ways to use these tools in the classroom! ;)
Needs change. Technology changes. The best educational technology stays nimble.