This is the FAK I keep in my truck and use for SAR.
Inside it has:
Several pairs of gloves
Pocket Mask
Assortment of 4x4's and other bandages
Several moist cleaning pads
Antibiotic Cream Packs
Steri Strips
Roll of Cloth Tape
Roll of Athletic Tape
Triangle Bandage
Some T3's, Vicatin, and Ibuprofen
Benadryl
Epi-pen
Insta Glucose
Roll of Vetrap
Cold Pack
Emergency Blanket
Scissors
Knife
Tweezers
Assorted oral airways
Tounge depressor
Elastic Bandage
Three Roller Gauze
Stethescope
Activated Charcoal
Irrigating Syringe
Eye wash
Rite-in-the-rain pad and pen
Bloodstopper bandage
ABD pad
SAM Splint