A few months ago there was a list of links to classic video game emulators posted. Very recently, I'm pleased to report, those links all came true. The Internet Archive bespoke upon aforementioned consoles, computers, and mileposts on our way to the tech utopia of today, (seriously, where's my flying car?) and they asked us to do something: Imagine every computer that ever existed, literally, in your browser. And it was so. I have absolutely no affiliation with jscott, btw. Thought I should disclose that.
MathTV is a real problem solver for many. It is also found on YouTube, and is free. Here is some background.
Training toddlers to compete. This reminds me of the Dilbert episode where Dogbert holds training sessions for toddlers. I know parents often want to realize themselves through their children, but aren't we going a bit overboard here?