Just finished putting together my first FAK and I’m pretty happy with how it turned out. I feel like I was able to fit quite a bit into the tin, which is similar to an Altoids tin (xylitol breath mints, spearmint flavor.) Note the creative use of my wife’s hair ties to create a Red Cross effect 

This is meant for very light cuts and scrapes or some stomach discomfort. I won’t save any lives with this FAK, but I think it’s a decent first try and will surely evolve over time:

Photo0119 by PhlebasEDC, on Flickr

I’ve got:
Pico widgy bar (for what? Not sure but it wasn’t being used otherwise )
Leatherman style (for the scissors and tweezers, mostly)
Alka seltzer tablets
Antacid pills
Band aids, various
Aspirin
Tylenol
Allergy meds: Zyrtek and Sudafed
Q-tips
Immodium
Insect sting relief gel
Alcohol wipes
Burn cream
Antibiotic ointment
Antiseptic wipes
Gauze pad