TED-Ed

In the process of getting and extending an education, most people should watch a lot of TED Talks. And the TED people also have the more explicitly educational TED-Ed | Lessons Worth Sharing

You can use, tweak, or completely redo any lesson featured on TED-Ed, or create lessons from scratch based on any video from YouTube.
Watch the video to learn how.

So any explanation or lab or demonstration worth making, any story worth telling, any song worth singing...whatever. Put it on Youtube, make it into a lesson.
(Or then again, maybe not.)