The fanciest versions of me come with two doors. I'll always work better than your best cooler. I don't just keep the heat out, I remove it from the air inside too. There's a famous joke about me running.

Well known for being used to do the one thing I am advised NOT to be used for.

An amazing sight, or what you use to view it if you’re near-sighted.

At home I turn play into motion, while elsewhere my slightest lean may guide a machine through danger.

I spend my days inside a shoe, though rarely seen at all. Yet lose my partner just one time, and I’m no use at all.