Similar to lots of your points, mine are a mix of practical and emotional ones:
* things last longer like car seat, swing, bouncer chair.
* they seem like babies for longer which I love - I'm cherishing every minute
* the shock on ppls faces e,g, when he pulls himself up to sit and they are shocked as they think he's 4 1/2 months!!!
* telling his little story - I used to hate ppl commenting how little he was and felt obliged to 'explain' and say... he was early, but now I don't mind telling his story
* him being in a routine already when he came home.
* having a few nights sleep at home to get my head around my surprise Cmas pressie and get the house sorted (even though it was the worst thing ever at the time, and I wish I hadn't of had to go home without him, but still... silver lining...)
* learning mummy skills in neo natal!
* joining the club of premmie mummies, on here and also with a couple of my friends who had early babies. It's like an instant friendship strengthner, something very special in common, something that you have to have been through to understand.
* celebrating the things full term babies to automatically, like when he had his first full feed of 2oz and took it all, when he was on the normal matreess, not heated no lamps.