hey i just took the time to open up my PSK and write an inventory:
Black rubber bands on outside of box
Black nylon strap attached to box
Steel carabiner on strap
Yellow nylon strap w/ buckle to hold box shut
2” x 2” sterile gauze pad
Wound white cloth medical tape
Paper: “Instant Guide to 1st Aid”
Bacitracin Zinc ointment packet
Packet: Motrin [contains 2 tablets]
Tube: Foille ointment
Glass applicator tube of iodine
Ammonia smelling salt
Butterfly closure bandage
Curad 2.25” x 3.5” bandage
3M steri-strip
2” x 3” strips duct tape
Thin white nylon line
Wire saw w/ string pull loops
Thin coated twisted steel cable
1 Liter clear plastic water bag
Needles, various sizes
Round magnet
Safety pins
Small metal compass
Fishing kit: 2 swivels; 4 split shot; 2 large, 4 medium, 8 small hooks
Monofilament fishing line on spool
Steel wire
“punk” firestarter
Iodine water purification tablets
Schrade SS1 folding knife
White LED Princeton Tec light
Match striking strips
Flint wheel sparkers
Straight razor blade
Sterile surgical scalpel blades
Sheet of heavy duty aluminum foil
Heavy duty black nylon thread
Blue transparent whistle
Cotton fluff in foil
Waterproof lifeboat matches
Waterproof strike anywhere matches

I decided that it was probably more realistic to focus on first aid with this. the whole thing is in the smallest otter box in high-visibility yellow with reflective tape on it. is there anything i'm missing?
ps i was thinking a morse code key would be useful, but haven't added it yet