Great thread. I have everything on this list in my kit and I'm anal about it being organized and inventoried often. I keep mine in a smaller/medium sized rubbermaid tote that sits on top of my tack trunk so all I have to do is grab and go.
My only additions to this is poltice and a paint scraper. Sometimes poltice is difficult to gather and smear where you need it so I use a paint scraper, I scoop the poltice and smear it with the scraper on to the soul of the hoof. Then it's ready to wrap!