The smell of the hand sanitiser, the contstant alarms going off (from your baby and everyone else's), learning how everything worked, becoming a pro at nappy changes around ventilators, then o2 tubes, heart montiors, NG etc...the pain of not being able to hold your baby, just to sit there and will them to get better, sometimes getting to stick a hand in the little window and hold their hand. getting booted out for doctors rounds, waiting and wondering what they were saying about your bub. SO SO much, mostly bad, but some good memories (going home the best of course ) It still pains me to think about it and we are almost 3 years free of the NICU.....