Visualize blowing bubbles

There's some good stuff here:

Some people imagine a calm scene to help them wind down at the end of the day. There are no rules about what you should imagine, so long as it's calming. Although clouds, the ocean, and mountains are common choices, you can focus on something as general or as specific as you want.

"I had a patient who liked to picture his office—brushing everything off his desk and going to sleep," Walsleben says. "Other people enjoy visualizing that they're blowing bubbles. They put the stick in the jar and watch every bubble go over a field until the jar is empty."

I found it right here.
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