It sounds like a full time job just lugging those keys around. <img src="images/graemlins/smile.gif" alt="" /> You might be able to get rid of some of the bulk by moving the light and Micra to somewhere besides your key ring. Not only will this make the keys easier to handle, but if you lose your keys, you won't be without some of your tools.
Perhaps you could put the light on a chain and wear it around your neck.
I am not familiar with the Micra, but is there a sheath available for it? Between moving the Micra to your hip and moving the light, that would get some of the bulk off of your keys.
You might also consider carrying a single cutting tool instead of two. If either of the cutting tools you now carry is not sufficient by itself, perhaps you could replace them both with a single tool that provides what you need.
As far as additional equipment, you might consider a few moistened towelletes, such as Wet Ones. They come in convenient individual foil packets. If you plan to use your hands to eat, you need to make sure your hands are clean. Also, if nature calls, you may need something to wipe with. The Wet Ones really clean well, and are REAL comfortable. If you happen to have a hemmorhoid, or are raw from overusing the 80 grit toilet paper at the office, these are a real treat. I don't mean to appear crude, folks, but this is a fact of life.
Another thing I would suggest to you is a small first aid kit. Mine is in a cassette tape case, which is made of a soft, waxy plastic, not the brittle, clear plastic that you usually see. I like it because while sturdy, it is not as breakable as the clear plastic ones, and is not quite as deep, either. It measures about 1/2 inch deep, compared to the 5/8 inch depth of the clear ones. It contains:
2 -- 1/32 ounce packets of Neosporin
2 -- alcohol (70%) towelettes
1 -- Sting Aid towelette (by Sawyer) (would have packed more, but that’s all I had!)
3 -- ¾ inch band-aids
4 -- 1 inch band-aids
2 -- 5/8 inch band-aids
2 -- 3/8 inch band-aids
4 -- medium size butterfly closures
2 -- generic immodium tablets (for diarrhea)
6 -- tylenol
5 -- 2 inch safety pins
1 -- single-edged razor blade
1 -- 2x3 inch non-stick gauze pad
1 -- tweezers in vinyl case
A 2x3 inch fresnel lens will be added (good for seeing splinters, thorns, etc.)
I would also suggest that you get your hepatitis shots for your own protection. If you render first aid to someone, and your barrier fails, or you don't have a barrier, you will be much safer.