I always found carrying a nail clipper a luxery outside a Urban enviroment. When I do notice I should have clipped my nails and haven't got a clipper handy than I use the scissors on my Champ. Works just as well.
Talking about FAK's. In addition to carry a FAK in my rucksack (on hike's) I carry a pocket FAK:
1x triangular bandadge
1x surgical gloves
1x large field dressing (also does the job of a small one)
1x safety pin
1x paper bag

I roll the contents around the field dressing with the tri. bandadge around the outside, close it with a safety pin. Eh presto! I got a very compact Pocket FAK.
I stumbled upon this idea as I went clubbing and felt stupid not carrying any FA gear in a place where so much can and does go wrong.

Anyone can think of any lackings or un - useful items?