Not sure how unusual we are
but it's one of my favourite bits of parenting!
Ds started it and we had this whole imaginary world with his toy planes and cars and they all had different characters and they would have all sorts of adventures or go to "school" etc.
And then with DD we have ended up doing very similar but with Lego friends.
Its just my favourite part of every day. But it's also been a nice kind of play therapy at times if they are dealing with difficult situations.
Just suddenly struck me that I have no idea how we began doing it, it certainly wasn't something I did with my parents (although they were great at reading me stories)