How do you use your idle-mind time?

When thinking about how you use your time, have you considered the several hours a day where your mind might be idle, when you are: 
Doing your morning hygieneIn the showerPreparing and eating your mealsCleaning or putteringIn the bathroomOn your commuteWalking outsideWaiting in lineJust chilling out
…in these moments, your body is operating on muscle memory, while your mind is free to think whatever it wants.

If you pay attention to your thoughts during the above activities, you might notice th...