These aren't really NDEs, they're more like "could have been near death" experiences. None of you were in any real danger of actually dying, at least not while you were old enough to have a concept of death.
I think these would be better called "brushes with death/danger" that kind of snap you out of the stupor of daily life.
BTW, the whole "live everyday as if it were your last" thing has always struck me as kind of counter-intuitive. I know the popular meaning is to be good and don't put things off, but really, if this was the last day of one's life, they would either spend it in a state of total indulgence or spiritual purification. Certainly they wouldn't waste it with trivial things such as posting on a message board or watching TV or going to work. I just don't think it is feasible for anyone but a monk.
Back on topic, I nearly choked to death on a piece of starburst hard candy, cherry flavor IIRC. I was downstairs in the basement by myself and so I ran up the stairs and made the signs that I was choking to my dad, and he starting doing the Heimlich. It didn't shoot out, but I think it unlodged from my throat. Anyway, paramedics got there a while later and checked my airways, although I would have been unconscious if the candy hadn't gotten dislodged. I didn't see a bright light or Jesus or see my life flash before my eyes. I might have seen my body from above, but I am probably misremembering.
How did it make me feel? It scared the bejeezus out of me and made me happy to be alive, but alas, only for a few months. Then the anaesthetic of life set in once again, and there it remains to this day.