Tree lights by moving camera. (Thanks, LEDs!)

I hope you had yourself a merry little Christmas.
A few years back, our daughter planted a photographic suggestion in my mind: play with exposures and camera movement.
Last night, after all the packages were wrapped, all the stockings stuffed, I turned out all the lights except for the ones decking the tree. I took a moment to enjoy the peace, the quiet, and the glow. 
Then I remembered my daughter's idea, and began to play.
Light is magic.