Mine is really weird and hard to describe. I'll try to be concise. I close my eyes (no shit Sherlock) and I imagine faces of people. It can be someone close, a star of a TV show, anything. Then I change element of their face one by one (e.g. their eyes). And I keep going. And everytime the face changes enough I question myself "I know this person, who is this ?". And when I answer the question, the face is clearer (because I've put a name on the face so it is easier to imagine it and correct it) and I can go on again until I fall asleep.
I've got one too. The only hard part for me was to create a shared calendar.