I don't know if these count as shared dreams, exactly, but this is the closest thread in which they might fit.
A couple of weeks ago, I had a dream that involved the image of a beckoning hand appearing inside an ancient Egyptian temple or tomb, or some such place. This image was inspired by a piece of artwork I'd seen during the day, so there was nothing too strange about that. What was
strange was that my youngest child (who knew nothing about this and had not seen the artwork) woke up the same night with a nightmare about "a ghost hand appearing out of the air" and beckoning to him.
Then, last week, I had a monumentally strange dream that came in three parts. The first involved there being a ghost in my house. The most notable thing about the ghost was that it was very friendly. Extremely friendly. It was quite in love with me, it seemed.
I "awoke" from that part of the dream (still dreaming, mind you) to see a spider in the shape of a symbol sneaking up on me. I got up to chase it when I "awoke" again, to the same scene, except this time the spider was in the shape of different symbol. I finally awoke (for real this time) rather discombobulated. My interpretation of this dream was that each awakening had been uncovering a falsehood, i.e., that the "friendly ghost" part of the dream was a sort of cover story to distract from the more nefarious spidery goings-on underneath.
I didn't mention this around my son, as he does not need to know about my nightmares or racy ghost dreams. However, a couple of nights later, he woke again from a nightmare.
In this nightmare, he was playing with his Nintendo Switch when it began to type out messages to him. It greeted him by name, and when he asked who it was, it typed out that it was a ghost haunting our house. He asked it its name and it replied "Cupid, the god of love." He accused it of lying, of trying to make him think it was harmless, when the ghost began to whisper in his ear, though he could not make out what it said. He woke up frightened, as you can imagine.
While this second dream of mine and my son's didn't coincide exactly, they were close, and similar enough thematically (a ghost haunting our house, love, the feeling of this being under false pretenses) that I found it more than a little unnerving. That it happened so soon after we both dreamed of disembodied hands seemed significant.
I'm not sure what to make of it. Perhaps our ghost dreams were a reaction to the same unknown stimulus (presumably not
an actual ghost in the house). Or perhaps he's developing the alleged family gift and intuitively picked up on my dreams? No idea. It's weird, though.
One last thing that unsettles me is how similar parts of my son's second dream were to this particularly bloodcurdling one of mine: https://forums.forteana.org/index.php?threads/is-this-coincidence-fate-or-something-else.55399/
and I know what happened with that one, so I'm not too inclined to just dismiss dreams as random nonsense.