One of the most useful techniques of the esoteric traditions (in my less than humble opinion) is the simple act of breathing. You can do it anywhere and at anytime.
In the grocery store line
Waiting in rush hour traffic
During those pesky TV commericals
While feeding the cat(s)
Listening to someone pour out their heart
Rolling your eyes at someone's blog post
Remember, the goal of life is to keep breathing as long as possible.