I’ll add to this list as I remember more, but I’m mainly posting this for anyone who comes across this website and has worries about their child.  All children are different and these are not meant to be markers for a diagnosis of any kind – but hindsight is 20/20 and these are some things we should have pursued further.

Opening and closing doors/cabinets/etc – Nicholas was at times relentless with doing this.  Open/Close/Open/Close.  Wherever we were, if there was a cabinet, he had to stand and do this repeatedly.  It was very hard to break this habit – and he was not easily redirected when doing this.

Spinning wheels – Nicholas would turn over his carriage, his toy ride-ons and spin the wheels.  When we mentioned this particular behavior to his doctor, we were told it was normal.  Instead of playing appropriately with his ride-on toy, he would turn it over and spin the wheels.   He did not do this obsessively, it was just an occasional thing – but we should have pursued this further at the time.