This is more of a mini kit than a possibles pouch (although they are kinda the same thing in a way, eh?) but it's what I carry when I'm hunting and fishing. I also carry a small shirt pocket med kit and a small Ti pot, which nestles easily in my hunting or fishing vest. If I have a small day pack, then I also carry a large space blanket and silnylon poncho or rain jacket. More rope too. I've also been known to carry a knife or two.
I have several hip pouch kits I carry as well, depending on location, conditions and what I plan for the day and time of year etc. Most of the time, I mainly need a compass to get my butt out of the woods, usually in the dark.