T1B

...clear ice cubes.

I'm having guests over tonight and I don't want to serve drinks with cloudy ice cubes.

That's not very helpful.

Try these. You'll surely impress your friends with your uncanny ability to find truly unique ways of solving life's everyday mundane problems. And they save water too.

This is a joke, right?

I thought everyone knew how to make clear ice cubes... apparently not.

Fill the trays with hot water... duh.