There have been a few times when the dots connected and it was easy to determine why the orb showed up. One instance involved a newly acquired garage sale find. The ghost came home with the pillow.

Another Orb showed up in connection with a deceased neighbor. His daughter appeared at my door with gifts at the same time one of my lights went out. I took a picture.

The orb is on the lamp post. (Partial pic posted here.)

Then again, Talking to Nightlights is probably the biggest ghost story of my life - even though I don't consider the entity who blinks the light at ghost... Another story, another time...